短語(yǔ)詞組短語(yǔ)butt -weld flange 焊法蘭plain butt -weld 對(duì)焊flash butt -weld 閃光對(duì)接焊縫Butt -weld Machine 亞焊機(jī)continuous butt -weld mill 連續(xù)式爐焊管機(jī)組furnace butt -weld pipe 爐焊管 返回 butt-weld