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["なぜガス区域での動火は電弧溶接のみで、ガス溶接は使用できないのか", "なぜガス区域での動火は電弧溶 kukari de shiii u 仅电弧焊接可以使用,而不能使用气体焊接。", "操作を行わずに学* にbine kyouu wa nai to kyou* に tte kyouu kyouu niyou, ka yo" "動火分析が全面的に合格しており、且所有手续齐全 て は電弧溶接やガス溶接とも使用可能である"]

2019-08-26View Original

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为什么煤气区域动火只能用电焊不能用气焊。
Reply #22019-08-26
没有操作过,进来学*,同求原因
Reply #32019-08-26
只要动火分析全面合格,手续齐全,电焊、气焊都是可以用的

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