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PRESSURE中文(简体)翻译：剑桥词典
PRESSURE中文(简体)翻译：剑桥词典
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pressure 在英语-中文（简体）词典中的翻译
pressurenoun uk
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/ˈpreʃ.ər/ us
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/ˈpreʃ.ɚ/
pressure noun
(PUSHING)
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C2 [ U ] the force you produce when you press something
压力
He put too much pressure on the door handle and it snapped.
他用力过猛，把门把手弄断了。
You can stop bleeding by applying pressure close to the injured area.
压住伤口边缘可以止血。
C1 [ C or U ] the force that a liquid or gas produces when it presses against an area
（液体或气体产生的）压力，压强
gas/water pressure
气／水压
The new material allows the company to make gas pipes which withstand higher pressures.
新材料使得公司可以生产出耐压力更强的输气管道。
The gas is stored under pressure (= in a container which keeps it at a higher pressure than it would usually have).
这种气体是加压贮存的。
更多范例减少例句If you apply pressure to a cut it's meant to stop the bleeding.She tried to cure the pain in my knee by putting manual pressure on the joint.The alarm is activated by the lightest pressure.My ankle is extremely painful if I put any pressure on it.The vacuum inside the tube caused it to implode when the external air pressure was increased.
pressure noun
(PERSUADING)
B2 the act of trying to make someone else do something by arguing, persuading, etc.
压力，紧迫；催促
public/political pressure
公众／政治压力
Teachers are under increasing pressure to work longer hours.
教师们被迫长时间工作，压力越来越大。
[ + to infinitive ] Pressure to abandon the new motorway is increasing.
要求放弃修建这条新的高速公路的呼声与日俱增。
The government is facing pressure from environmental activists.
政府正面临着来自环境保护主义者的压力。
The Defence Secretary resigned under pressure from the Prime Minister (= because the Prime Ministerforced him to).
国防大臣是在首相的压力下辞职的。
She's putting pressure on him (= trying to persuade him) to get married.
她在逼他结婚。
formal The international community is trying to bring pressure to bear on the government (= trying to persuade them) to resolve the situation.
国际社会正试图说服该国政府解决问题。
B2 [ C or U ] a difficult situation that makes you feel worried or unhappy
压力；困扰
She's got a lot of pressure on her at work just now.
她现在工作压力很大。
Be nice to him - he's been under a lot of pressure recently.
对他好一点——最近他压力很大。
Can you work well under pressure?
你在压力下工作能做得好吗？
the pressures of work
工作压力
so no pressure then! humorous
something that you say when what someone has just said makes you feel that you must try very hard to do something
压力来了
"These exams are the most important of all." "Oh, so no pressure then!"
“这些考试是所有考试中最重要的。”“哦！有压力了吧！”
[ U ] a situation in a football game in which attacking players are moving forward and getting closer to scoring a goal, and players from the opposing team have to work hard to stop them from scoring
（足球比赛中）一方向前进攻，临近进球，对方不得不全力防守
Ryan Giggs put the home defence under pressure.
瑞恩·吉格斯给主场球队的防守施压。
Playing four forwards puts too much pressure on the defence.
派出四名前锋会对防守造成太大压力。
更多范例减少例句They are putting pressure on the government to equalize state pension ages between men and women.Some managers exert considerable pressure on their staff to work extra hours without being paid.He's putting pressure on me to change my mind.Despite renewed pressure to give up the occupied territory, they will not yield.Her confession could not be admitted as evidence because it was given under pressure from the police.
pressureverb [ T ] US uk
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/ˈpreʃ.ər/ us
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/ˈpreʃ.ɚ/ (UK pressurize)
to strongly persuade someone to do something they do not want to do
强迫，对…施加压力
She was pressured into joining the club.
她被迫加入那个俱乐部。
同义词
coerce formal
(pressure在剑桥英语-中文（简体）词典的翻译 © Cambridge University Press)
pressure的例句
pressure
The surprising behaviour of the surfaces of constant total pressure occurs entirely in the boundary layer.
来自 Cambridge English Corpus
This residue in its turn is then subjected to distillation under reduced pressure to give both a vacuum distillate and a vacuum residue.
来自 Cambridge English Corpus
Injection volumes were estimated by measurement of the displacement of cytoplasm after an injection at a controlled pressure.
来自 Cambridge English Corpus
For instance, over-blowing on a wind instrument can cause an octave rise, which holds as the pressure is reduced.
来自 Cambridge English Corpus
Thus, each year the worms were subjected to selection pressure during 2 steps, and to genetic drift during 22 steps.
来自 Cambridge English Corpus
Despite general pressures toward greater state involvement, specific responses to trade-induced tensions varied from country to country.
来自 Cambridge English Corpus
High pressure studies of energy transfer and strongly coupled bacteriochlorophyll dimers in photosynthetic protein complexes.
来自 Cambridge English Corpus
Since the key issue is the psychological pressure that law can exert on every individual mind, the law must be clear, well diffused, and foreseeable.
来自 Cambridge English Corpus
示例中的观点不代表剑桥词典编辑、剑桥大学出版社和其许可证颁发者的观点。
C2,C1,B2,B2
pressure的翻译
中文（繁体）
推, 壓力, （液體或氣體產生的）壓力…
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西班牙语
presión, problema, presionar…
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葡萄牙语
pressão, pressionar, pressão [feminine]…
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जोर लावणे, जोरात दाबणे, दाब…
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（人に対する）圧力, 強制力, （精神的な）プレッシャー…
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baskı, tazyik, zorlama…
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pression [feminine], faire pression sur, pression…
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pressió, problema, pressionar…
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druk…
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நீங்கள் எதையாவது அழுத்தும்போது நீங்கள் உருவாக்கும் விசை, ஒரு திரவம் அல்லது வாயு ஒரு பகுதிக்கு எதிராக அழுத்தும்போது அது உருவாக்கும் விசை, வாக்குவாதம்…
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(दबाने या धकेलने के कारण उत्पन्न) दबाव, (तरल या गैस का) दाब, दबाव…
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દબાવવું, દબાણ, મુશ્કેલ પરિસ્થિતિ જે તમને બેચેન અથવા નાખુશ બનાવે છે…
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tryk, pres, tvang…
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tryck, press, stress…
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tekanan, desakan…
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der Druck…
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press [neuter], påvirkning [masculine], stress [masculine]…
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دباؤ, گیس یا کسی سیال چیز کا دباؤ, تناؤ…
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стискання, тиск, гніт…
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давление, воздействие, напряжение…
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మీరు దేనినైనా నొక్కినప్పుడు మీరు ఉత్పత్తి చేసే శక్తి, ద్రవాన్ని లేదా వాయువును ఒక ప్రదేశం మీద నొక్కినప్పుడు ఉత్పత్తి అయే శక్తి, ఒత్తిడి…
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ضَغْط, يَمارِس ضَغطا عَلى…
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চাপ দেওয়া, তরল বা গ্যাসের দ্বারা সৃষ্ট চাপ, চাপ…
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tlak, tíha, (ná)tlak…
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tekanan, paksaan…
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การกด, ความกดดัน, แรงกระตุ้น…
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lực, áp suất, áp lực…
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presja, naciski, stres…
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압박, 압박감, 스트레스…
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pressione, fare pressione su…
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pressure的发音是什么？
在英语词典中查看 pressure 的释义
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press/push the right button(s) idiom
pressed
presser
pressing
pressure
pressure cooker
pressure group
pressure point
pressure washer
pressure更多的中文(简体)翻译
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blood pressure
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“每日一词”
veggie burger
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/ˈvedʒ.i ˌbɜː.ɡər/
US
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/ˈvedʒ.i ˌbɝː.ɡɚ/
a type of food similar to a hamburger but made without meat, by pressing together small pieces of vegetables, seeds, etc. into a flat, round shape
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Forget doing it or forget to do it? Avoiding common mistakes with verb patterns (2)
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stochastic parrot
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英语-中文（简体）
Noun
pressure (PUSHING)
pressure (PERSUADING)
so no pressure then!
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Pressure | Definition, Measurement, & Types | Britannica
Pressure | Definition, Measurement, & Types | Britannica
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Also known as: bulk stress
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Last Updated:
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Table of Contents
Pressure
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Category:
Science & Tech
Key People:
Robert Boyle
Percy Williams Bridgman
Stephen Hales
Pyotr Nikolayevich Lebedev
Carl Bosch
(Show more)
Related Topics:
high-pressure phenomena
atmospheric pressure
radiation pressure
ram pressure
pressure-gradient force
(Show more)
On the Web:
Exploring Our Fluid Earth - Pressure (Feb. 21, 2024)
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pressure, in the physical sciences, the perpendicular force per unit area, or the stress at a point within a confined fluid. The pressure exerted on a floor by a 42-pound box the bottom of which has an area of 84 square inches is equal to the force divided by the area over which it is exerted; i.e., it is one-half pound per square inch. The weight of the atmosphere pushing down on each unit area of Earth’s surface constitutes atmospheric pressure, which at sea level is about 15 pounds per square inch. In SI units, pressure is measured in pascals; one pascal equals one newton per square metre. Atmospheric pressure is close to 100,000 pascals.ideal gas lawAccording to the ideal gas law, when a gas is compressed into a smaller volume, the number and velocity of molecular collisions increase, raising the gas's temperature and pressure.(more)The pressure exerted by a confined gas results from the average effect of the forces produced on the container walls by the rapid and continual bombardment of the huge number of gas molecules. Absolute pressure of a gas or liquid is the total pressure it exerts, including the effect of atmospheric pressure. An absolute pressure of zero corresponds to empty space or a complete vacuum.
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Physics and Natural Law
Measurement of pressures by ordinary gauges on Earth, such as a tire-pressure gauge, expresses pressure in excess of atmospheric. Thus, a tire gauge may indicate a pressure of 30 pounds (per square inch), the gauge pressure. The absolute pressure exerted by the air within the tire, including atmospheric pressure, is 45 pounds per square inch. Pressures less than atmospheric are negative gauge pressures that correspond to partial vacuums.diffusion of water across a semipermeable membrane(A) Water diffuses down its concentration gradient from side 1 to side 2 of a rigid container to dilute the impermeant substance. (B) The net flux of the water increases the hydrostatic pressure on side 2, tending to force the water back to side 1.(more)Hydrostatic pressure is the stress, or pressure, exerted equally in all directions at points within a confined fluid (liquid or gas). It is the only stress possible in a fluid at rest. See Pascal’s principle.
Lithostatic pressure, the stress exerted on a body of rock by surrounding rock, is a pressure in Earth’s crust somewhat analogous to hydrostatic pressure in fluids. Lithostatic pressure increases with depth below Earth’s surface.
This article was most recently revised and updated by Kara Rogers.
PRESSURE中文(繁體)翻譯：劍橋詞典
PRESSURE中文(繁體)翻譯：劍橋詞典
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pressure 在英語-中文（繁體）詞典中的翻譯
pressurenoun uk
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/ˈpreʃ.ər/ us
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/ˈpreʃ.ɚ/
pressure noun
(PUSHING)
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C2 [ U ] the force you produce when you press something
壓力
He put too much pressure on the door handle and it snapped.
他用力過猛，把門的把手弄斷了。
You can stop bleeding by applying pressure close to the injured area.
壓住傷口邊緣可以止血。
C1 [ C or U ] the force that a liquid or gas produces when it presses against an area
（液體或氣體產生的）壓力
gas/water pressure
氣／水壓
The new material allows the company to make gas pipes which withstand higher pressures.
新材料使得公司可以生產出抗壓力更強的輸氣管。
The gas is stored under pressure (= in a container which keeps it at a higher pressure than it would usually have).
這種氣體是加壓貯存的。
更多範例减少例句If you apply pressure to a cut it's meant to stop the bleeding.She tried to cure the pain in my knee by putting manual pressure on the joint.The alarm is activated by the lightest pressure.My ankle is extremely painful if I put any pressure on it.The vacuum inside the tube caused it to implode when the external air pressure was increased.
pressure noun
(PERSUADING)
B2 the act of trying to make someone else do something by arguing, persuading, etc.
壓力，緊迫；催促
public/political pressure
公眾／政治壓力
Teachers are under increasing pressure to work longer hours.
教師們被迫長時間工作，壓力越來越大。
[ + to infinitive ] Pressure to abandon the new motorway is increasing.
要求放棄修建這條新高速公路的呼聲與日俱增。
The government is facing pressure from environmental activists.
政府正面臨著來自環保人士的壓力。
The Defence Secretary resigned under pressure from the Prime Minister (= because the Prime Ministerforced him to).
國防大臣是在首相的壓力下辭職的。
She's putting pressure on him (= trying to persuade him) to get married.
她在逼他結婚。
formal The international community is trying to bring pressure to bear on the government (= trying to persuade them) to resolve the situation.
國際社會正試圖說服該國政府解決問題。
B2 [ C or U ] a difficult situation that makes you feel worried or unhappy
壓力；困擾
She's got a lot of pressure on her at work just now.
她現在工作壓力很大。
Be nice to him - he's been under a lot of pressure recently.
對他好一點——最近他壓力很大。
Can you work well under pressure?
你在壓力下工作能做得好嗎？
the pressures of work
工作壓力
so no pressure then! humorous
something that you say when what someone has just said makes you feel that you must try very hard to do something
壓力來了
"These exams are the most important of all." "Oh, so no pressure then!"
「這些考試是所有考試中最重要的。」「哦！真的要加油了！」
[ U ] a situation in a football game in which attacking players are moving forward and getting closer to scoring a goal, and players from the opposing team have to work hard to stop them from scoring
（足球比賽中）一方向前進攻，臨近進球，對方不得不全力防守
Ryan Giggs put the home defence under pressure.
瑞恩·吉格斯給主場球隊的防守施壓。
Playing four forwards puts too much pressure on the defence.
派出四名前鋒會對防守造成太大壓力。
更多範例减少例句They are putting pressure on the government to equalize state pension ages between men and women.Some managers exert considerable pressure on their staff to work extra hours without being paid.He's putting pressure on me to change my mind.Despite renewed pressure to give up the occupied territory, they will not yield.Her confession could not be admitted as evidence because it was given under pressure from the police.
pressureverb [ T ] US uk
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/ˈpreʃ.ər/ us
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/ˈpreʃ.ɚ/ (UK pressurize)
to strongly persuade someone to do something they do not want to do
強迫，對…施加壓力
She was pressured into joining the club.
她被迫加入那個俱樂部。
同義詞
coerce formal
(pressure在劍橋英語-中文（繁體）詞典的翻譯 © Cambridge University Press)
pressure的例句
pressure
Thus, each year the worms were subjected to selection pressure during 2 steps, and to genetic drift during 22 steps.
來自 Cambridge English Corpus
The right ventricular systolic pressure tends to decrease with age.
來自 Cambridge English Corpus
High pressure studies of energy transfer and strongly coupled bacteriochlorophyll dimers in photosynthetic protein complexes.
來自 Cambridge English Corpus
This residue in its turn is then subjected to distillation under reduced pressure to give both a vacuum distillate and a vacuum residue.
來自 Cambridge English Corpus
The lung was inflated to higher mean volumes without having to use high peak airway pressures to maintain ventilation (oxygenation and carbon dioxide removal).
來自 Cambridge English Corpus
The surprising behaviour of the surfaces of constant total pressure occurs entirely in the boundary layer.
來自 Cambridge English Corpus
The duct was then replaced and the oscillating pressure measured in similar conditions.
來自 Cambridge English Corpus
Despite permanent weight loss after surgery, there is no difference in blood pressure compared to untreated controls in long-term followup.
來自 Cambridge English Corpus
示例中的觀點不代表劍橋詞典編輯、劍橋大學出版社和其許可證頒發者的觀點。
C2,C1,B2,B2
pressure的翻譯
中文（簡體）
推, 压力, （液体或气体产生的）压力，压强…
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presión, problema, presionar…
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pressão, pressionar, pressão [feminine]…
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（人に対する）圧力, 強制力, （精神的な）プレッシャー…
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baskı, tazyik, zorlama…
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pression [feminine], faire pression sur, pression…
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pressió, problema, pressionar…
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druk…
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நீங்கள் எதையாவது அழுத்தும்போது நீங்கள் உருவாக்கும் விசை, ஒரு திரவம் அல்லது வாயு ஒரு பகுதிக்கு எதிராக அழுத்தும்போது அது உருவாக்கும் விசை, வாக்குவாதம்…
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(दबाने या धकेलने के कारण उत्पन्न) दबाव, (तरल या गैस का) दाब, दबाव…
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દબાવવું, દબાણ, મુશ્કેલ પરિસ્થિતિ જે તમને બેચેન અથવા નાખુશ બનાવે છે…
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tryk, pres, tvang…
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tryck, press, stress…
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tekanan, desakan…
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der Druck…
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press [neuter], påvirkning [masculine], stress [masculine]…
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دباؤ, گیس یا کسی سیال چیز کا دباؤ, تناؤ…
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стискання, тиск, гніт…
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давление, воздействие, напряжение…
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మీరు దేనినైనా నొక్కినప్పుడు మీరు ఉత్పత్తి చేసే శక్తి, ద్రవాన్ని లేదా వాయువును ఒక ప్రదేశం మీద నొక్కినప్పుడు ఉత్పత్తి అయే శక్తి, ఒత్తిడి…
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ضَغْط, يَمارِس ضَغطا عَلى…
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চাপ দেওয়া, তরল বা গ্যাসের দ্বারা সৃষ্ট চাপ, চাপ…
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tlak, tíha, (ná)tlak…
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tekanan, paksaan…
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การกด, ความกดดัน, แรงกระตุ้น…
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lực, áp suất, áp lực…
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presja, naciski, stres…
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압박, 압박감, 스트레스…
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pressione, fare pressione su…
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在英語詞典中查看 pressure 的釋義
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press/push the right button(s) idiom
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/ˈvedʒ.i ˌbɜː.ɡər/
US
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/ˈvedʒ.i ˌbɝː.ɡɚ/
a type of food similar to a hamburger but made without meat, by pressing together small pieces of vegetables, seeds, etc. into a flat, round shape
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Forget doing it or forget to do it? Avoiding common mistakes with verb patterns (2)
March 06, 2024
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March 04, 2024
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英語-中文（繁體）
Noun
pressure (PUSHING)
pressure (PERSUADING)
so no pressure then!
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pressure - 搜索 词典
sure - 搜索 词典 Rewards网页图片视频学术词典地图更多航班我的必应笔记本pressure美 [ˈpreʃər] 英 [ˈpreʃə(r)] n.压力；压强；挤压；大气压v.逼迫；使迫不得已网络压迫；强制；电压复数：pressures 现在分词：pressuring 过去式：pressured 搭配同义词adj.+n.constant pressure,internal pressure,external pressure,great pressure,continuous pressurev.+n.reduce pressure,come pressure,increase pressure,face pressure,relieve pressuren.force,weight,heaviness,burden,compressionv.coerce,pressurize,bulldoze,bully,insist权威英汉双解英汉英英网络释义pressure显示所有例句n.挤压时when sth presses1.[u]压力；挤压the force or weight with which sth presses against sth elseThe nurse applied pressure to his arm to stop the bleeding.护士压住他的胳膊止血。The barriers gave way under the pressure of the crowd.拥挤的人群把路障推倒了。气体；液体of gas/liquid2.[u][c]压力；压强the force produced by a particular amount of gas or liquid in a confined space or container; the amount of thisair/water pressure空气╱水的压力Check the tyre pressure(= the amount of air in a tyre) regularly.要定期检查轮胎的气压。大气of atmosphere3.[u]大气压the force of the atmosphere on the earth's surfaceA band of high/low pressure is moving across the country.一股高╱低气压正经过这个国家。劝说；强迫persuasion/force4.[u]催促；要求；呼吁；强迫the act of trying to persuade or to force sb to do sthThe pressure for change continued to mount.改革的呼声持续高涨。There is a great deal of pressure on young people to conform.年轻人被大力要求顺应社会。The government eventually bowed to popular pressure(= they agreed to do what people were trying to get them to do) .政府最终向群众的压力低头。Teenagers may find it difficult to resist peer pressure .青少年可能觉得很难抗拒同侪的压力。紧张stress5.[u]心理压力；紧张difficulties and feelings of anxiety that are caused by the need to achieve or to behave in a particular wayShe was unable to attend because of the pressure of work.由于工作紧张，她不能出席。You need to be able to handle pressure in this job.你要能应付这一工作的压力。How can anyone enjoy the pressures of city life?怎么会有人喜欢都市生活的压力呢？IDMput pressure on sb (to do sth)强迫；促使；劝说to force or to try to persuade sb to do sthThe director is under increasing pressure to resign.主任面对被迫请辞的压力越来越大。The team performs well under pressure.这个队在压力下表现良好。under pressure（液体或气体）受压力，压缩if a liquid or a gas is keptunder pressure , it is forced into a container so that when the container is opened, the liquid or gas escapes quickly被迫being forced to do sthThe director is under increasing pressure to resign.主任面对被迫请辞的压力越来越大。承受着（急于完成某事的）压力made to feel anxious about sth you have to doThe team performs well under pressure.这个队在压力下表现良好。v.1.[oftpass]~ sb (into sth/into doing sth).~ sb to do sth逼迫；使迫不得已to persuade sb to do sth, especially by making them feel that they have to or should do itDon't let yourself be pressured into making a hasty decision.不要勉强自己仓促作决定。n.1.【物】压力,压强;大气压力;电压2.压迫,强制3.紧急,急迫;繁重,繁忙4.精神压力,政治[经济,舆论等]压力5.艰难,为难,困苦6.压;按;挤;榨1.【物】压力,压强;大气压力;电压2.压迫,强制3.紧急,急迫;繁重,繁忙4.精神压力,政治[经济,舆论等]压力5.艰难,为难,困苦6.压;按;挤;榨v.1.对...施加压力;迫使2.使(机舱等)增压;密封n.1.attempts to persuade, threaten, or force someone to do something2.a worried feeling that you get when you have to deal with a difficult or complicated situation; a problem or situation that causes you to have this worried feeling3.a force pressing on someone or something; the amount of force that a gas or liquid produces in an area or container4.conditions that influence the way that events develop1.attempts to persuade, threaten, or force someone to do something2.a worried feeling that you get when you have to deal with a difficult or complicated situation; a problem or situation that causes you to have this worried feeling3.a force pressing on someone or something; the amount of force that a gas or liquid produces in an area or container4.conditions that influence the way that events developv.1.to try to make someone do something by forcing, threatening, or persuading them in a determined way1.压力注塑压力(Pressure)：6个大气压力，9个大气压力 在这个实验中，我们将研究这三个 因子分别在两种水平上对均值的影响。 全 …wenku.baidu.com|基于73839个网页2.压强常用物理英文词汇 - 豆丁网 ... power 功率 pressure 压强，压力 primary coil 原线圈 ... www.docin.com|基于1274个网页3.压迫高中英语新课程标准词汇表 ... press vt. 压，按 pressure n. 压迫，压力，压强 pretend vi. 假装，装作 ... www.douban.com|基于953个网页4.气压Unity 脚本类总索引 ... isTeared 是否撕裂 pressure 气压 tearFactor 撕裂系数 ... game.ceeger.com|基于815个网页5.强制PETS3_资料内容_资料下载_学习资料共享网 ... president 总统，校长，会长，主席 pressure 压力；强制 pretend 假装 ... www.87994.com|基于321个网页6.电压六级词汇词根+联想记忆法 ... preside --v. 主持 pressure --n. 压,压力,电压,压迫,强制,紧迫 prestige --n. 声望,威望,威信 ... www.zhuoda.org|基于247个网页7.压，按大学英语四级词汇表 ... press vt. 压，按，揿；催促 pressure n. 压力；压力；压，按 pretty a. 漂亮的，标致的 ... www.360doc.com|基于138个网页更多释义收起释义例句释义:全部全部,压力压力,压强压强,挤压挤压,大气压大气压,逼迫逼迫,使迫不得已使迫不得已,压迫压迫,强制强制,电压电压类别:全部全部,口语口语,书面语书面语,标题标题,技术技术来源:全部全部,字典字典,网络网络难度:全部全部,简单简单,中等中等,难难更多例句筛选收起例句筛选1.On the surface pressure fields, a strongly warm low center over the African-Asian continents weakens through the abrupt change.地面气压由突变前亚非大陆强热低压中心转变为突变后的弱低压中心。www.ilib.cn2.The general pressure fluctuation was not high enough to affect the reliability of the furnace.炉压总体波动不大，对加热炉安全运行影响不大。www.chinamet.cn3.noise seems inappropriate at a time of sadness; inappropriate shoes for a walk on the beach; put inappropriate pressure on them.噪音好像不适合于悲伤的时候；不适合于在海滩上走的鞋；给他们施以不适当的压力。www.1stenglish.com4.The pressure is likely to come more on additional spending; you may not be able to do as much tax relief.额外开支可能带来更多的压力；你也许无法随心所欲地减税。www.ftchinese.com5.nobody knows exactly what was going on, but you can guess that there must have been a lot of pressure not to publish it.当时没人确切地了解发生了什么事。但你可以猜测到，为了不将这个评论发表一定有很多的压力。www.bing.com6.Yes, that's just a teeny bit of pressure. And there's no sign of its letting up.对，那只是一点点压力，但这压力并没有减少的迹象。www.kekenet.com7.Necessity creates pressure and forces you invent something or to make it happen or to use your potentiality.需求创造压力，逼着你去发明一些东西，或者让某些事情发生，或者发挥你的潜力。blog.sina.com.cn8.European researchers said the salt reduction has led to lower blood pressure, fewer heart attacks and strokes, and lives saved.欧洲研究人员说减少食盐量已经导致血压水平降低，心脏病和中风发作减少，并挽救了生命。www.med66.com9.But the statement, they felt, might have been used to put undue pressure on China.但是他们认为，这项声明可能会被用于给中国施加过多的压力。www.bing.com10.Were there no electric pressure in a conductor, the electron flow would not take place in it.导体内如果没有电压，便不会产生电子流动现象。wenku.baidu.com12345© 2024 Microsoft隐私声明和 Cookie法律声明广告帮11.6: Gauge Pressure, Absolute Pressure, and Pressure Measurement - Physics LibreTexts
11.6: Gauge Pressure, Absolute Pressure, and Pressure Measurement - Physics LibreTexts
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College Physics 1e (OpenStax)
11: Fluid Statics
11.6: Gauge Pressure, Absolute Pressure, and Pressure Measurement
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11.6: Gauge Pressure, Absolute Pressure, and Pressure Measurement
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SummaryGlossary
Learning Objectives
By the end of this section, you will be able to:
Define gauge pressure and absolute pressure.
Understand the working of aneroid and open-tube barometers.
If you limp into a gas station with a nearly flat tire, you will notice the tire gauge on the airline reads nearly zero when you begin to fill it. In fact, if there were a gaping hole in your tire, the gauge would read zero, even though atmospheric pressure exists in the tire. Why does the gauge read zero? There is no mystery here. Tire gauges are simply designed to read zero at atmospheric pressure and positive when pressure is greater than atmospheric.
Similarly, atmospheric pressure adds to blood pressure in every part of the circulatory system. (As noted in Pascal’s Principle, the total pressure in a fluid is the sum of the pressures from different sources—here, the heart and the atmosphere.) But atmospheric pressure has no net effect on blood flow since it adds to the pressure coming out of the heart and going back into it, too. What is important is how much greater blood pressure is than atmospheric pressure. Blood pressure measurements, like tire pressures, are thus made relative to atmospheric pressure.
In brief, it is very common for pressure gauges to ignore atmospheric pressure—that is, to read zero at atmospheric pressure. We therefore define gauge pressure to be the pressure relative to atmospheric pressure. Gauge pressure is positive for pressures above atmospheric pressure, and negative for pressures below it.
Definition: Gauge Pressure
Gauge pressure is the pressure relative to atmospheric pressure. Gauge pressure is positive for pressures above atmospheric pressure, and negative for pressures below it.
In fact, atmospheric pressure does add to the pressure in any fluid not enclosed in a rigid container. This happens because of Pascal’s principle. The total pressure, or absolute pressure, is thus the sum of gauge pressure and atmospheric pressure:
\[P_{abs} = P_g + P_{atm} \]
where \(P_{abs}\) is absolute pressure, \(P_g\) is gauge pressure, and \(P_{atm} \) is atmospheric pressure. For example, if your tire gauge reads 34 psi (pounds per square inch), then the absolute pressure is 34 psi plus 14.7 psi (\(P_{atm}\) in psi), or 48.7 psi (equivalent to 336 kPa).
Definition: Absolute Pressure
Absolute pressure is the sum of gauge pressure and atmospheric pressure.
For reasons we will explore later, in most cases the absolute pressure in fluids cannot be negative. Fluids push rather than pull, so the smallest absolute pressure is zero. (A negative absolute pressure is a pull.) Thus the smallest possible gauge pressure is \(P_g = -P_{atm} \) (this makes \(P_{abs}|) zero).
There is no theoretical limit to how large a gauge pressure can be.
There are a host of devices for measuring pressure, ranging from tire gauges to blood pressure cuffs. Pascal’s principle is of major importance in these devices. The undiminished transmission of pressure through a fluid allows precise remote sensing of pressures. Remote sensing is often more convenient than putting a measuring device into a system, such as a person’s artery.
Figure shows one of the many types of mechanical pressure gauges in use today. In all mechanical pressure gauges, pressure results in a force that is converted (or transduced) into some type of readout.
Figure \(\PageIndex{1}\): This aneroid gauge utilizes flexible bellows connected to a mechanical indicator to measure pressure.
An entire class of gauges uses the property that pressure due to the weight of a fluid is given by \(P = h\rho g\).
Consider the U-shaped tube shown in Figure, for example. This simple tube is called a manometer. In Figure(a), both sides of the tube are open to the atmosphere. Atmospheric pressure therefore pushes down on each side equally so its effect cancels. If the fluid is deeper on one side, there is a greater pressure on the deeper side, and the fluid flows away from that side until the depths are equal.
Let us examine how a manometer is used to measure pressure. Suppose one side of the U-tube is connected to some source of pressure \(P_{abs}\) such as the toy balloon in Figure(b) or the vacuum-packed peanut jar shown in Figure(c). Pressure is transmitted undiminished to the manometer, and the fluid levels are no longer equal. In Figure(b), \(P_{abs}\) is greater than atmospheric pressure, whereas in Figure(c), \(P_{abs}\) is less than atmospheric pressure. In both cases, \(P_{abs}\) differs from atmospheric pressure by an amount \(h\rho g\), where \(\rho\) is the density of the fluid in the manometer. In Figure(b), \(P_{abs}\) can support a column of fluid of height \(h\), and so it must exert a pressure \(h\rho g\) greater than atmospheric pressure (the gauge pressure \(P_g\) is positive). In Figure(c), atmospheric pressure can support a column of fluid of height \(h\), and so \(P_{abs}\) is less than atmospheric pressure by an amount \(h\rho g\) (the gauge pressure \(P_g\) is negative). A manometer with one side open to the atmosphere is an ideal device for measuring gauge pressures. The gauge pressure is \(P_g = h\rho g\) and is found by measuring \(h\).
Figure \(\PageIndex{2}\): An open-tube manometer has one side open to the atmosphere. (a) Fluid depth must be the same on both sides, or the pressure each side exerts at the bottom will be unequal and there will be flow from the deeper side. (b) A positive gauge pressure \(P_g = h\rho g\) transmitted to one side of the manometer can support a column of fluid of height \(h\). (c) Similarly, atmospheric pressure is greater than a negative gauge pressure \(P_g\) by an amount \(h\rho g\). The jar’s rigidity prevents atmospheric pressure from being transmitted to the peanuts.
Mercury manometers are often used to measure arterial blood pressure. An inflatable cuff is placed on the upper arm as shown in Figure. By squeezing the bulb, the person making the measurement exerts pressure, which is transmitted undiminished to both the main artery in the arm and the manometer. When this applied pressure exceeds blood pressure, blood flow below the cuff is cut off. The person making the measurement then slowly lowers the applied pressure and listens for blood flow to resume. Blood pressure pulsates because of the pumping action of the heart, reaching a maximum, called systolic pressure, and a minimum, called diastolic pressure, with each heartbeat. Systolic pressure is measured by noting the value of \(h\) when blood flow first begins as cuff pressure is lowered. Diastolic pressure is measured by noting when blood flows without interruption. The typical blood pressure of a young adult raises the mercury to a height of 120 mm at systolic and 80 mm at diastolic. This is commonly quoted as 120 over 80, or 120/80. The first pressure is representative of the maximum output of the heart; the second is due to the elasticity of the arteries in maintaining the pressure between beats. The density of the mercury fluid in the manometer is 13.6 times greater than water, so the height of the fluid will be 1/13.6 of that in a water manometer. This reduced height can make measurements difficult, so mercury manometers are used to measure larger pressures, such as blood pressure. The density of mercury is such that \(1 \, mm \, Hg = 133 \, Pa\).
Definition: Systolic Pressure
Systolic Pressure is the maximum blood pressure.
Definition: Diastolic Pressure
Diastolic pressure is the minimum blood pressure.
Figure \(\PageIndex{3}\): In routine blood pressure measurements, an inflatable cuff is placed on the upper arm at the same level as the heart. Blood flow is detected just below the cuff, and corresponding pressures are transmitted to a mercury-filled manometer. (credit: U.S. Army photo by Spc. Micah E. Clare\4TH BCT)
Example \(\PageIndex{1}\): Calculating Height of IV Bag: Blood Pressure and Intravenous
Infusions
Intravenous infusions are usually made with the help of the gravitational force. Assuming that the density of the fluid being administered is 1.00 g/ml, at what height should the IV bag be placed above the entry point so that the fluid just enters the vein if the blood pressure in the vein is 18 mm Hg above atmospheric pressure? Assume that the IV bag is collapsible.
Strategy for (a)
For the fluid to just enter the vein, its pressure at entry must exceed the blood pressure in the vein (18 mm Hg above atmospheric pressure). We therefore need to find the height of fluid that corresponds to this gauge pressure.
Solution
We first need to convert the pressure into SI units. Since \(1.0 \, mm \, Hg = 133 \, Pa\),
\[\begin{align*}P = 18 \, mm \, Hg \times \dfrac{133 \, Pa}{1.0 \, mm \, Hg} = 2400 \, Pa \\[5pt] &= 0.24 \, Pa \end{align*}\]
Discussion
The IV bag must be placed at 0.24 m above the entry point into the arm for the fluid to just enter the arm. Generally, IV bags are placed higher than this. You may have noticed that the bags used for blood collection are placed below the donor to allow blood to flow easily from the arm to the bag, which is the opposite direction of flow than required in the example presented here.
A barometer is a device that measures atmospheric pressure. A mercury barometer is shown in Figure. This device measures atmospheric pressure, rather than gauge pressure, because there is a nearly pure vacuum above the mercury in the tube. The height of the mercury is such that \(h\rho g = P_{atm}\). When atmospheric pressure varies, the mercury rises or falls, giving important clues to weather forecasters. The barometer can also be used as an altimeter, since average atmospheric pressure varies with altitude. Mercury barometers and manometers are so common that units of mm Hg are often quoted for atmospheric pressure and blood pressures. Table gives conversion factors for some of the more commonly used units of pressure.
Figure \(\PageIndex{4}\): A mercury barometer measures atmospheric pressure. The pressure due to the mercury’s weight, \(h\rho g\) equals atmospheric pressure. The atmosphere is able to force mercury in the tube to a height \(h\) because the pressure above the mercury is zero.
Conversion to N/m2 (Pa)
Conversion from atm
\(1.0 atm=1.013×10^5N/m^2\)
\(1.0 atm=1.013×10^5N/m^2\)
\(1.0dyne/cm^2=0.10N/m^2\)
\(1.0atm=1.013×10^6dyne/cm^2\)
\(1.0kg/cm^2=9.8×10^4N/m^2\)
\(1.0atm=1.013kg/cm^2\)
\(1.0lb/in.^2=6.90×10^3N/m^2\)
\(1.0atm=14.7lb/in.^2\)
\(1.0 mm Hg=133N/m^2\)
\(1.0atm=760 mm Hg\)
\(1.0 cm Hg=1.33×10^3N/m^2\)
\(1.0atm=76.0 cm Hg\)
\(1.0 cm water=98.1N/m^2\)
\(1.0atm=1.03×10^3cm water\)
\(1.0 bar=1.000×10^5N/m^2\)
\(1.0atm=1.013 bar\)
\(1.0 millibar=1.000×10^2N/m^2\)
\(1.0 atm=1013 millibar\)
Conversion Factors for Various Pressure Units
Summary
Gauge pressure is the pressure relative to atmospheric pressure.
Absolute pressure is the sum of gauge pressure and atmospheric pressure.
Aneroid gauge measures pressure using a bellows-and-spring arrangement connected to the pointer of a calibrated scale.
Open-tube manometers have U-shaped tubes and one end is always open. It is used to measure pressure.
A mercury barometer is a device that measures atmospheric pressure.
Glossary
absolute pressure
the sum of gauge pressure and atmospheric pressure
diastolic pressure
the minimum blood pressure in the artery
gauge pressure
the pressure relative to atmospheric pressure
systolic pressure
the maximum blood pressure in the artery
This page titled 11.6: Gauge Pressure, Absolute Pressure, and Pressure Measurement is shared under a CC BY 4.0 license and was authored, remixed, and/or curated by OpenStax via source content that was edited to the style and standards of the LibreTexts platform; a detailed edit history is available upon request.
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欧路词典|英汉-汉英词典 pressure是什么意思_pressure的中文解释和发音_pressure的翻译_pressure怎么读
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n. ；迫，vt. 迫使；密封；使……增时 态: pressured, pressuring, pressures
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近义词n. physical phenomenon, force, push, pushing, urgency, somesthesia, somaesthesiav. compel, oblige, obligate, influence, act upon, work联想词tension张，拉;stress;exerted外露的;high-pressure高的;pressurized加;friction摩擦，摩擦;blood血，血液;exert，挥;strain张;vacuum真空;force武;
词组 | 习惯用语
under pressure 面临，在之下；受到high pressure 高，高；高度紧张blood pressure n. 血low pressure 低；松懈pressure drop 下降，下降hydraulic pressure [机]液；水pressure vessel 容器high blood pressure 高血water pressure 水air pressure ；风under the pressure of 在…下negative pressure [物]负；[计]负atmospheric pressure 大，大gas pressure ；体；煤pressure difference 差；差；补偿器；梯度pressure water 加水pressure control 控制pressure gradient 梯度differential pressure [物]差static pressure 静
英语例句库
the pressure to conform.遵守习俗的。The air pressure is falling.在降低a high-pressure salesperson.行推销的推销员a high-pressure job.使人高度紧张的工作an environmental pressure group.环境保护集团。zero-pressure pneumatic零轮胎high-pressure pneumatics高动技术prone pressure method俯伏人工呼吸法pressure-air monte-jus缩空升液器the calibrations on a pressure gauge.计上的刻度High blood pressure is a killer.高血是致人死命的。There is great pressure on schoolchildren to conform.小学生有巨大的要去适应。a low-pressure lifestyle; a low-pressure personality.轻松的生活方式；随和的人格blood pressure in the ascending aorta.向上的主动脉血。we will confound these tactics by the pressure groups.我们会通过集团挫败这些策略。She hung in there despite pressure to resign.她无视让她辞职的而坚守在那里it might now be possible to pressure him into resigning.现在逼他辞职也许有可能。Tottenham was a pressure point for racial tension.托特纳姆是种族关系紧张的点。pressure to solve the problem has redoubled.要求解决问题的倍增。声明：以上例句、词性分类均由互联网资源自动生成，部分未经过人工审核，其表达内容亦不代表本软件的观点；若现问题，欢迎向我们指正。显示所有包含 pressure 的英语例句
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Pressure – The Physics Hypertextbook
Pressure – The Physics Hypertextbook
chaoseworldfactsget bentphysics
The PhysicsHypertextbookOpus in profectus
… densitypressurebuoyancy …
Pressure
discussion
summary
practice
problems
resources
[close]
Discussion
definition
Pressure is the ratio of force applied to the area covered…
P = FA
The unit of pressure is the pascal
⎡⎢⎣
Pa =
N
=
kg m/s2
=
kg
⎤⎥⎦
m2
m2
m s2
The pascal is also a unit of stress and the topics of pressure and stress are connected.
Bed of nails (not really pressure but shear strain, which has the same units)
Finger bones are flat on the gripping side to increase surface area in contact and thus reduce compressional stresses
gauge vs. absolutespring loaded pressure gauge
Selected gauge pressures (black‑positive, red‑negative)
atm
kPa
device, event, phenomenon, process
200
20,000
pressurized breathing apparatus
140
14,000
milk homogenization
110
11,000
rupture compression strength of vertebral disks
7–14
700–1400
puffed cereal manufacture
9
900
espresso machine
4–7
400–700
bicycle tire
>4
>400
oxygen poisoning and nitrogen narcosis for dives > 30 m
2.7–4.1
275–415
champagne at serving temperature (10 °C)
2.7
275
carbonated soft drinks
2.0–2.5
200–250
car tire
>4
>400
blast wave, 100% lethality
2.3–4.0
230–400
blast wave, 50% lethality
1.6–2.3
160–230
blast wave, 1% lethality
1.02
103
typical household pressure cooker
1
101.325
one standard atmosphere over environment
47
bottom of feet while standing
20
lungs, extreme exhalation
17
sustained pressure, eardrum ruptures
8
sustained pressure, eardrum senses pain
13–19
blood pressure, arterial, systolic (during a heartbeat)
8–12
blood pressure, arterial, diastolic (between heartbeats)
7–14
aircraft shock wave
8.8
blowing your nose
11
eye, severe glaucoma
1.6–3.0
eye, normal
7
tennis ball
4.0
blood pressure, capillary, arterial end
1.3
blood pressure, capillary, venous end
15
bladder, voiding, maximum
3
bladder, micturition reflex (gotta go urge)
2–4
bladder, voiding, sustained
1.3–2.6
gastrointestinal tract
0.6–1.6
cerebrospinal fluid
0.4–0.9
blood pressure, venous
0.6–0.8
interstitial fluid (osmotic pressure)
2
acoustic pressure, eardrum ruptures (160 dB)
0.02
acoustic pressure, eardrum senses pain (120 dB)
2 × 10−8
acoustic pressure, threshold of hearing (0 dB)
0
0
environmental pressure
−1.3
lungs, resting
−1.5
lungs, drinking through a 15 cm straw
−25
lungs, extreme inhalation
−1
−101.325
one standard atmosphere below environment, a perfect vacuum in a standard atmosphere
Selected absolute pressures (largest to smallest)
atm
Pa
device, event, phenomenon, process
3.4 × 1011
3.4 × 1016
center of the Sun
????
????
center of Jupiter
1010
1015
diamond anvil, record high
3.6 × 106
3.6 × 1011
center of Earth
1,080
1.1 × 108
Marianas Trench, Pacific Ocean (−10,924 m)
160
1.6 × 107
Lake Baikal, Asia (−1,620 m)
140
1.4 × 107
Lake Tanganyika, Africa (−1,470 m)
90
9.0 × 106
surface of Venus
40
4.0 × 106
Lake Superior, North America (−406 m)
????
????
record dive by a human
26
2.6 × 106
helium freezes at about 1 K
>3
>300,000
oxygen poisoning and nitrogen narcosis for dives > 30 m
108,380
Earth atmosphere, record high, altitude adjusted (Siberia, 1968)
106,000
Earth atmosphere, Dead Sea (−400 m)
1
101,325
Earth atmosphere, sea level, standard atmosphere
90,000
Earth atmosphere at 1,000 m, interior of Concorde
87,000
Earth atmosphere, record low, altitude adjusted (Typhoon Tip, 1979)
80,000
Earth atmosphere at 2,000 m, interior of commercial jet aircraft
65,000
Earth atmosphere, La Paz, Bolivia (3,650 m)
~½
53,000
Earth atmosphere, highest permanently inhabited town (5,100 m)
~40,000~
Earth atmosphere, vertical limit of human survivability (~7,000 m)
~⅓
31,000
Earth atmosphere, Mount Everest (8,848 m)
~⅕
19,000
Earth atmosphere, altitude of commercial jet aircraft (12,000 m)
0.063
6,400
Earth atmosphere, Armstrong limit, exposed body liquids boil (19,000 m)
>0.033
>3,300>
low vacuum (LV)
<0.033
<3,300<
medium vacuum (MV)
0.025
2,200
Earth atmosphere, altitude of reconnaissance plane (26,000 m)
0.007
700
surface of Mars
0.002
230
Earth atmosphere, altitude of highest sky dive (41,422 m)
0.0006
60
Earth atmosphere, altitude of highest unmanned balloon flight (52,000 m)
~10−5
~1
surface of Pluto, maximum
<10−6
<0.1
high vacuum (HV)
<10−9
<10−4
very high vacuum (VHV)
<10−12
<10−7
ultra high vacuum (UHV)
~10−13
~10−8
surface of the Moon, daytime
~10−15
~10−10
surface of the Moon, nighttime
<10−15
<10−10
extreme ultrahigh vacuum (XHV)
~10−17
~10−12
I am told that below this value all vacuum equipment leaks
the atmosphereStandard Atmospheric Tables
Chemical composition of the atmosphere
Source: US Standard Atmosphere, 1976
gas
formula
molecularweight (g/mol)
fraction
nitrogen
N2
028.0134000
0.780840000
oxygen
O2
031.9988000
0.209476000
argon
Ar
039.9480000
0.009340000
carbon dioxide
CO2
044.0099500
0.000314000
neon
Ne
020.1830000
0.000018180
helium
He
004.0026000
0.000005240
methane
CH4
016.0430300
0.000002000
krypton
Kr
083.8000000
0.000001140
hydrogen
H2
002.0159400
0.000000500
xenon
Xe
131.3000000
0.000000087
overall
028.9644253
0.999997147
fluids
The gauge pressure in a uniform fluid at a particular depth is directly proportional to…
the density of the fluid (ρ). The denser the fluid, the greater the pressure.
the acceleration due to gravity (g). The stronger the gravity, the greater the pressure.
the depth (h). The deeper you go, the greater the pressure.
Combining these factors gives the gauge pressure (Pg) at any depth…
Pg = ρgh
Adding on the the surface pressure (P0) gives the absolute pressure…
P = P0 + ρgh
The absolute pressure in a uniform or nonuniform fluid at a particular depth (h) measured along the vertical axis (z) is given by…
h P = P0 + ⌠⌡ρ(z)g(z) dz0
Pressure in a uniform fluid — Stevin's law. Simon Stevin (1548–1620) discovered the hydrostatic paradox that the downward pressure of a liquid is independent of the shape of the vessel, and depends only on its height. Stevin was probably the first to work with the concept of pressure, having lived entirely before Pascal or Bernoulli. Stevin's Flemish word for pressure was the noun gheprang from the verb pranghen, to press (geprang and prangen in modern spelling). The current Dutch word for pressure is druk and the verb to press is drukken.
devices
barometer
barometer, manometer, Hare's apparatus
The atmosphere as a unit.
1 atm
= 101,325 Pa
(by definition)
= 760 torr
(by definition)
= 763.43… mm Hg
(approximately)
= 1.03… kg/cm2
(approximately)
= 10.3… tonnes/m2
(approximately)
= 14.7… psi
(approximately)
= 1.06… tons/ft2
(approximately)
physiologyblood pressureear pressure in the middle ear: eardrum at end of outer ear connected to smaller oval window at beginning of inner ear. 15-30 times greater pressure. combination of difference in membrane diameters and lever effects of middle ear bones.eye pressure and glaucoma
Circulatory pressures (mm Hg, a.k.a. torr)
Source: Physics of the Body (paid link)
location
systolic
diastolic
mean
aorta
120
80
100
left ventricle
120
8
left atrium
7
10
4
pulmonay artery
15
7
12
right ventricle
15
2
right atrium
4
4
0
pulmonary capillary wedge
7
10
4
pascal's principle
Pascal's principle: Pressure changes applied to the surface of an enclosed fluid are transmitted evenly throughout the fluid.
Water seeks its own level. That's one of the realities of life.
hydraulics
Queckenstedt's maneuver - barbaric medical test from the early 20th century to test for spinal stenosis
discussion
summary
practice
problems
resources
Pressure
… densitypressurebuoyancy …
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