一、一般术语 1.0.1标准环境条件 温度为20℃,相对温度为65%,压力为标准大气压(101325帕)。 1.0.2标准气体状态 温度为0℃,压力为标准大气压的气体状态。 1.1.1压力[符号:P,单位:帕 (托)] 单位时间内气体分子从某一假想的单位平面的两侧通过时,沿该平面的法线方向的动量改变率; First, the general terms 1.0.1 Standard Environmental Conditions Temperature is 20 ℃, the relative temperature of 65%, the pressure of the standard atmospheric pressure (101,325 Pa). 1.0.2 Standard gas temperature is 0 ℃, the pressure is the standard atmospheric pressure gas state. 1.1.1 Pressure [Symbol: P, unit: Pa (Torque)] Momentum change rate along the normal direction of the plane when gas molecules pass through both sides of an imaginary unit plane in unit time;