For pure substances, the freezing point is the same as the melting point.
对纯物质来说，冰点等于熔点。
For a description of the mixing behaviour the compressibility factors of the pure substances and of the mixtures were used to calculate the mixing effect of the pressure and the excess volume.
为了描述真实气体的混合性质，根据纯物质和混合物的压缩因子计算了压力混合效应和过剩体积。
The equation was tested for 350 pure substances of 13117 temperature points, the absolute average deviation was 2.8%.
预测350种各类物质13117个温度点的汽化热，与文献常用值相比较的总绝对平均误差为2.8％。
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