遮光弧 的英文怎麼說
中文拼音 [zhēguānghú]
遮光弧
英文
obscured sector-
Health and safety in welding and allied processes - transparent welding curtains, strips and screens for arc welding processes
焊接和類似工藝的衛生和安全.電弧焊工藝用透明焊接屏板,屏帶和遮光罩
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