中文摘要：

本文选出了可构成饱和液体密度通用对比方程的参数△ρｒ和△Ｔｒ，给出了饱和液体密度的一般推算法和具体通用算式，该算式除水以外，适用于包括氨在内的各种制冷剂，也适用于氮、氧等液体。通用算式精度约０．３１％，满足工程所需精度。本文还给出了计算水饱和密度的高精度算式。

英文摘要：

In this paper, appropriate reduced parameters △ρｒ and△Ｔｒ Are are selected, and a new gener- alized prediction equation for saturated liquids density is developed. It is applicable to refrigeratant、 hydrocarbons、 nitrogen、ammonia etc, the total average absolute deviation is about 0.31%. A high accuracy density equation for saturated water is proposed here too.