1、Polydispersity is a measure of the variation in size or molecular weight of particles in a sample.
多分散性是对样品中颗粒尺寸或分子量变化的度量。

2、The polydispersity of the polymer solution was determined using dynamic light scattering.
利用动态光散射法确定了聚合物溶液的多分散性。