英语语法分析

To introduce a stochastic grouping method for subchronic test of rats.

研究大鼠亚慢性试验随机分组方法。

To study the subchronic toxicity of formaldehyde by inhalation in rats.

研究甲醛经呼吸道染毒的亚慢性毒性作用。

Objective To investigate the subchronic injury of mammal thyroid function caused by Prochloraz.

目的：为了解咪鲜胺对哺乳动物甲状腺功能的亚慢性损伤情况。