Chemical composition of welding wire的意思|示意
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焊丝的化学成分
Chemical composition of welding wire的网络常见释义
焊丝化学成分 ... 注：含铜量不包括镀铜层Cu: (%) include copper-coated layer. 焊丝化学成分Chemical composition of welding wire 材质标准：ER70S-6 ER50-6 ...