For pyritecontaining unoxidized kaolinite,the selective comminution aims at liberating and separating pyrite and its interlocking minerals.

对未经氧化的含黄铁矿高岭岩，选择性粉碎的目的是解离并分选出黄铁矿及其聚。

Proteins and DNA are polymers.

氧核糖核酸都是聚。