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narrow gap welding
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narrow gap welding
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工学
电弧焊
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narrow gap welding
窄间隙电弧焊
厚板对接接头,焊前不开坡口或只开小角度坡口,并留有窄而深的间隙,采用气体保护焊或埋弧焊的多层焊完成整条焊缝的高效率焊接法。
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