The organic phosphorus pesticides and organochlorine pesticides are two major types of pesticide residues.

有机磷农药和有机氯农药是农药残留的两大类型。

youdao

The organic phosphorus pesticides and organochlorine pesticides are two major types of pesticide residues.

有机磷农药和有机氯农药是农药残留的两大类型。

youdao