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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,气体分子的平均平动动能越大,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.由于气态方程未列入高考《考试说明》中,因此许多学生遇到涉及有关气体状态变化的物理试题就认为是“超纲”
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 average kinetic energy of gas molecules is larger, the average velocity of the molecular impactor wall is greater, the more dense the gas molecules, the more molecules per unit time acting on the wall area, the greater the pressure of the gas. Due to the fact that the equation of state is not included in the “Exam Description” of the college entrance examination, many students are considered “super-class” in the physical examination of the changes in the state of the gas.