在离心级联分离多组分稳定同位素过程中,找出组分间的全分离因子同它们的相对分子质量差之间存在的确定性关系,有利于级联的分离计算和实验研究。建立了实验数据可靠性分析原则,确定了符合实验条件的数据;得到在定常态下短离心级联中,任意组分间的全分离因子与其组分间的相对分子质量之差存在指数关系。应用所建立的级联全分离因子关系式,对文献中发表的离心级联分离稳定同位素的实验数据进行了分析研究和补全工作。 In the process of centrifugation cascade separation of multicomponent stable isotopes, finding out the deterministic relationship between total separation factors of components and their relative molecular mass difference is conducive to the separation calculation and experimental study. The principle of reliability analysis of experimental data was established and the data fitting the experimental conditions were determined. The exponential relationship between the total separation factor of arbitrary components and the relative molecular mass of the components in the short centrifugation cascade was obtained. By using the established cascade full separation factor relational data, the experimental data of stable isotopes of centrifugal cascade published in the literature were analyzed and complemented.