This paper introduces briefly the career dangers in welding, such as burning, noise, electric shocks, fume and gases, which will damage the health of welders.

简要介绍了焊接操作中存在的多种职业危害，如灼伤、噪声、电击、烟尘和废气、辐射等，严重损害工人的身体健康。

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Therefore, it has obvious damage to big rats' main organs when they inhale crude oil fume and gas fume, which may provide valuable bases for forensic medicine authentication.

大鼠吸入原油蒸气和汽油蒸气对主要器官有明显的损害作用，为法医学鉴定提供了有价值的依据。

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