测量液体表面张力来获得.针对表面张力的传统测量方法具有实验精度与适用范围不能兼得的问题，本文提出一种测量液体

表面张力的新方法: 基于拉普拉斯方程，以液泡膜为研究对象，分析液泡逐渐增大的过程，利用线性回归分析压强差与曲率半

径的数据，求解表面张力系数.此方法不仅适用于高温高压环境，且与最大泡压法相比，在未引入新误差项的同时避开了其主

要误差来源.

to surface tension coefficient in value for liquid，the free energy can be got by measuring the surface tension.

Traditional methods can not guarantee both application scope and precision. As to this problem，a new method is

mentioned in this paper: Based on the Laplace's equation studying bubble films，the process of bubble gradually increasing

is considered. The data of differential pressure and related radius is dealt with by linear regression equation

to get the liquid surface tension. This method not only applies to the environment of high temperature and pressure，

but also avoids the main error source of maximum bubble pressure method without introducing new error.