如果有一个物理量，对任何闭合回路积分是常数，这个物理量就是一个热力学态函数。

If you have a quantity which is constant over any closed path, that quantity is a thermodynamics state function.

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因为所有的热力学量都是态函数。

Since these are all state functions.

youdao

If you have a quantity which is constant over any closed path, that quantity is a thermodynamics state function.

如果有一个物理量,对任何闭合回路积分是常数，这个物理量就是一个热力学态函数。

麻省理工公开课 - 热力学与动力学课程节选

Since these are all state functions.

因为所有的热力学量都是态函数。

麻省理工公开课 - 热力学与动力学课程节选