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气体压强是大量气体分子作用在器壁单位面积上的平均作用力.从微观角度看,气体的压强与气体分子的平均动能(温度)及气体分子的密集程度(分子密度)有关.温度越高,分子撞击器壁的平均速度就越大,气体分子越密集,单位时间作用在器壁单位面积上的分子数就越多,气体的压强就越大.
Gas pressure is the average force exerted by a large number of gas molecules on the unit area of the wall. From a microscopic point of view, the pressure of a gas is related to the average kinetic energy (temperature) of the gas molecules and to the concentration of gas molecules (molecular density) , The greater the average velocity of the molecular impactor wall, the more dense the gas molecules, the more molecules per unit time acting on the wall area, the greater the pressure of the gas.