问题
填空题
用的8个热力学变量P、V、T、S、h、U、A、G可求出一阶偏导数336个，其中独立的偏导数共112个，但只有6个可通过实验直接测定，因此需要用（）将不易测定的状态性质偏导数与可测状态性质偏导数联系起来。
答案
参考答案：Maxwell关系式
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用的8个热力学变量P、V、T、S、h、U、A、G可求出一阶偏导数336个，其中独立的偏导数共112个，但只有6个可通过实验直接测定，因此需要用（）将不易测定的状态性质偏导数与可测状态性质偏导数联系起来。
参考答案：Maxwell关系式
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