4.可逆过程( Reversible process) 系统经历某一过程后,如果能使系统与外界同时恢 复到初始状态,而不留下任何痕迹,则此过程为可 逆过程。 A process that can reversed without leaving any trace on the surroundings. That is, both the system and the surroundings are returned to their initial states at the end of the reverse process4.可逆过程(Reversible process) 系统经历某一过程后，如果能使系统与外界同时恢 复到初始状态，而不留下任何痕迹，则此过程为可 逆过程。 A process that can reversed without leaving any trace on the surroundings. That is, both the system and the surroundings are returned to their initial states at the end of the reverse process