Hydrogen sulfide is a harmful impurity of the biogas and some industrial gases, not only it can cause the pipeline and equipments corrosion but also can threaten the human safety.
硫化氢是沼气以及一些工业气体中的有害成分，它不但可以导致管道和设备的腐蚀，而且还会危及人们的健康。
Hydrogen sulfide is a harmful impurity in the biogas and some industrial gases. It can not only cause the pipeline and equipments corrosion but also can threaten the human safety.
硫化氢是沼气以及一些工业气体中的有害成分，它不但可以导致管道和设备的腐蚀，而且还会危及人们的健康。
The paper relates the pollution and harm from the drained off waste acid from wire drawing and cooling water with harmful impurity in steel wire production.
叙述拉丝生产中排放的废酸和含有害杂质的冷却水对周围水质的污染及危害。
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