The combined heat and power generation system is a thermodynamic system that is a primary energy sources, which can produce secondary energy sources in a row. 热电联产系统是一种一次能源连续产生两种以上二次能源的热力系统。
This paper presents a transformation relation on the quantity of heat and temperature of thermodynamics system in relativity from one inertial system to another. 文章给出了相对论情况下热力学系统从一个惯性系到另一个惯性系时热量及温度变换关系的另一种推证方法。