narrow-gap electroslag welding的意思|示意
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窄间隙电渣焊
narrow-gap electroslag welding的网络常见释义
窄间隙电渣焊 ... 管极电渣焊electroslag welding with tube electrode 窄间隙电渣焊narrow-gap electroslag welding 电渣堆焊electroslag surfacing ...