车间空气中敌百虫卫生标准: health standard for trichlorfon in the air of workplace
替: Ⅰ动词1.(代替) replace; substitute for; supply [take] the place of 短语和例子接替 replace; take over; 用塑料来代替木材或金属 use plastics in place of wood or metal; 你歇会儿, 我来替你。 have a rest. i'll take over. 谁来替她呢