The phase diagram of completely mutually soluble double-fluid system needs not only many sets of data, but also map work curve of refract rate-composition, data processing and mapping larger workload.

• 摘要由于完全互溶双液系平衡相图的绘制需要许多组数据，而且要绘制折光率－组成工作曲线，数据处理和绘图工作量较大。