：用NRTL方程，对二元混合物的气一液相平衡数据和液一液相平衡数据进行关联，并用液一液相平衡数据优化所得的参数，预测汽液相平 衡．关联和预测的结果均能满足程设计要求-: The NRTL equation, the binary mixture of gas-liquid phase equilibrium liquid-liquid phase equilibrium data and the data associated with liquid-liquid phase equilib