metham

Patricia metham, the headmistress, said the number of applicants from mainland China had trebled in the past three years.

该校的女校长帕特里夏·梅塔姆说，从中国大陆来的申请人的数量过去3年已经翻了三番。

Chlorpyrifos was one kind of organophosphorus pesticides with higher efficacy and could substitute highly poisonous metham-sodium and parathion.

毒死蜱是替甲胺磷和对硫磷等毒农药的效有机磷杀虫剂,在世界范围得到广泛使用。