A direct conversion method of thermodynamic partial derivatives-a simple and convenient method is put for ward,which expresses thermodynamic partial derivatives determined hardly with physical measures determined easily.%提出了热力学函数一阶偏微商的直接推证法，利用这种方法，很容易将难测量的热力学偏微商用易测物理量系统地表示。其思路简单明了，易于掌握。
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