meaning "act or fact of pressing"in a physical sense is attested from 1601.(3)Scientific sense in physics is from 1660.(4)fig.sense is from 1958.以上是这个单词的历史.(1)说明pressure是从拉丁词语premere(to press)发展过来的.是premere(to press)的〔过去分词形式演变的名词〕pressu...
Pressures in enclosed containers less than this value are spoken of as vacuum pressures; for example, the vacuum pressure inside a cathode-ray tube is 10-8 mmHg, meaning that the pressure is equal to the pressure that would be produced by a column of mercury, with no force acting above ...
Pressure is a scalar quantity. meaning it has a magnitude, but not a direction. This may seem confusing since it's usually obvious the force has direction. It may help to consider pressure of a gas in a balloon. There is no obvious direction of the movement of particles in a gas. In ...
,from L.pressura "action of pressing," from pressus,pp.of premere "to press" .(2)Literal meaning "act or fact of pressing" in a physical sense is attested from 1601.(3)Scientific sense in physics is from 1660.(4)fig.sense is from 1958.以上是这个单词的历史.(1)说明pressure是从拉丁...
pressure meaning, definition, what is pressure: an attempt to persuade someone by using ...: Learn more.
2.physics, physiologythe force per unit area exerted by a gas or liquid against the walls of its container or that would be exerted on a wall immersed at that spot in the middle of a body of fluid:The pressure can be considered either relative to some reference pressure, such as that ...
Pressures in enclosed containers less than this value are spoken of as vacuum pressures; for example, the vacuum pressure inside a cathode-ray tube is 10-8 mmHg, meaning that the pressure is equal to the pressure that would be produced by a column of mercury, with no force acting above ...
Physics—and Pressure: Its meaning and applications in nursingFlitter, Hessel H.AJN The American Journal of Nursing
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"to pressurize," 1886, American English, from pressure (n.). Meaning "to exert pressure on" (someone) is attested by 1922. Related:Pressured;pressuring. 双语例句 1. The government wilted in the face of such powerfulpressure. 政府面对如此大的压力,失去了信心。