The utility model provides a gas mask for operating personnel who works with harmful substance.
本实用新型提供了一种用于从事有害物质作业人员的防毒面罩。
In recent years, it has become more and more stringent to control over harmful substance contents in textiles among the nations in the world.
近年来，世界各国对纺织品中的有害物质含量的控制已越来越严格。
"Incident" means an event involving the actual or probable discharge into the sea of a harmful substance, or effluents containing such a substance.
“事故”系指涉及实际或可能将有害物质或含有这种物质的废液排放入海的事件。
Through the transformation function of modifier, it successfully realizes zero emission of such harmful substance as CH2O in combustion of low-carbon fuel.
通过改性剂的转化作用，成功实现低碳燃料燃烧时甲醛(CH2O)等有害物质的零排放。
Article 49 materials containing radioactivity in excess of standards or materials containing toxic and harmful substance easy to dissolve in the water may not be used in a Marine construction project.
第四十九条海洋工程建设项目，不得使用含超标准放射性物质或者易溶出有毒有害物质的材料。
Ammonia is a poisonous and harmful substance that should be recovered during equipment maintenance so as to avoid it leaks out to pollute environment and hurt human.
氨是一种有毒有害物质，在石化装置设备进行检修时需要对氨进行回收，否则容易造成环境污染和人体伤害及人员中毒事故的发生。
Ammonia is a poisonous and harmful substance that should be recovered during equipment maintenance so as to avoid it leaks out to pollute environment and hurt human.
氨是一种有毒有害物质，在石化装置设备进行检修时需要对氨进行回收，否则容易造成环境污染和人体伤害及人员中毒事故的发生。
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