短語(yǔ)詞組短語(yǔ)butt seam weld 對(duì)線焊;對(duì)接滾焊焊縫butt joint weld 對(duì)接焊butt groove weld 對(duì)接坡口焊butt -weld 對(duì)頭焊接;平式焊接;碰焊;以對(duì)頭焊接接合plain butt -weld 對(duì)焊flash butt -weld 閃光對(duì)接焊縫 返回 butt weld