【多选题】节流过程是不可逆过程,在过程中流体处于非平衡状态,没有确定的状态参数。但可研究节流前后流体处于平衡状态的情况。例如:离节流足够远的两个截面1、2处,那里的气体已为平衡状态。Throttling process is an irreversible process, in which the fluid is in a non-equilibrium state and there are no d...
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