分散指数 meaning in English

dispersancy index
dispersion index

M z w prediction of the polydispersity index z w of cellulose from its rheological data
从流变数据预测纤维素的多分散指数
As the stirring rate increasing , the average diameter of capsules decreases exponentially and its distribution turns narrow , but its polydispersity index increases
随着转速的增加，胶囊的平均粒径呈指数关系减小，分布变窄，多分散指数却增加。
As the ta concentration increases , the average diameter of capsules decreases exponentially . simultaneously , its distribution gets narrow , and its polydispersity index decreases
随着ta浓度的增加，胶囊粒径呈线性关系减小，分布变窄，多分散指数略有降低。