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用泵式沸点仪测定了常压下四氯化碳—１ ，１ ，２ － 三氯乙烷在不同液相组成的沸点，并用间接法由ＴＰＸ推算了与之平衡的汽相组成．用最小二乘法求出了该系统的液相活度系数模型参数，由模型参数推算的泡点与实验值能很好的吻合．
The boiling points of carbon tetrachloride - 1, 1,2 - trichloroethane at different liquid phases were measured by using a pump - type boiling point meter. The vapor phase composition was also calculated by TPX. The parameters of liquid phase activity coefficient of the system were calculated by the least square method. The bubble point calculated by the model parameters can be well fitted with the experimental data.