In this paper,the internal energy and heat of the polytropic process,the adiabatic process and the isothermal processes of the varying mass system are discussed.

• 讨论了变质量系统的多方过程、绝热过程及等温过程的能量关系,并与常质量系统的多方过程、绝热过程及等温过程的性质进行了比较。