评价了几种三元系几何模型，利用统一溶液模型推导出新的预测活度相互作用系数公式。
The activity interaction parameters between alloying elements and P in liquidFe at 1873K were obtained by the thermodynamic calculation.
此程序有计算溶液活度系数和估算基团相互作用参数这两种功能。
It has two functions, i. e., calculation of solution activity coefficients and estimation of group interaction parameters.
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