吉布斯相律在盐水系统所表现的规律性,有异于凝聚系统,作者对此提出了不同于惯常的见解。文章通过对盐水系统和凝聚系统两者相图差异的对比,通过两者的相律式异同点的对比,说明了盐水系统不归属于凝聚系统的原由。并以“共结点”的性质作为论证对象,阐明了该系统中相律表现的规律。 Gibbs phase law in the saltwater system of the regularity, different from the cohesion system, the author put forward different from the usual view. By comparing the difference of phase diagrams between the brine system and the condensing system, the article illustrates the reason why the brine system does not belong to the condensing system by comparing the similarities and differences between the two phases. And to “the knot point” of the nature as the object of argument, clarified the law of phase law in the system.