shield inert gas metal arc welding

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1.	惰性气体保护金属极弧焊焊接相关词汇_焊接人社区 ... shield arc welding 封闭电弧焊 shield inert gas metal arc welding 惰性气体保护金属极弧焊 ... www.maihanji.com
2.	惰性气体保护金属极电弧焊 ... shield hole 屏蔽孔 shield inert gas metal arc welding 惰性气体保护金属极电弧焊 shielding action 屏蔽效应，屏蔽作用 ... www.mapeng.net