英语语法分析

Photochemical degradation of butachlor in different water.

丁草胺在不同类型水中的光化学降解。

Physical and chemical characters of butachlor are described.

文章综述了丁草胺的物理化学性质；

Butachlor is one of the three largest produced and used herbicides in our country.

丁草胺是我国生产和使用量最大的三种除草剂之一。