Words and Expressions 5.enthalpy n.焓，（单位质量的）热含量 A thermodynamic function of a system,equivalent to the sum of the internal energy of the system plus the product of its volume multiplied by the pressure exerted on it by its surroundings. 6.f1uxn.通量 The rate of flow of fluid,particles,or energy through a given surface. 流体、微粒或能量通过一设定的表面时流动的速率 5.enthalpy n.焓, (单位质量的)热含量 A thermodynamic function of a system, equivalent to the sum of the internal energy of the system plus the product of its volume multiplied by the pressure exerted on it by its surroundings. Words and Expressions 6.flux n. 通量 The rate of flow of fluid, particles, or energy through a given surface. 流体、微粒或能量通过一设定的表面时流动的速率