flourine

This article introduces the application and effect of flourine surfactant in oil-proof paper.

本文介绍了表面活性刑在防油纸中的应和果。

Objective To know and master the charater of the genesis and development and epidemic of flourine poisoning.

目的了解和掌握黔南地区地方性中毒的发生、发展及流行特征。