短語詞組短語welded side seam 熔接縫butt welded body seam 平焊桶體接縫butt -welded side seam [機(jī)]對接接縫strengthening of welded seam 焊縫補(bǔ)強(qiáng)welded seam become 焊縫形成welded seam defect 焊縫缺陷plane welded seam 平面焊縫welded seam impacting toughness 焊縫沖擊韌性welded seam bursh 焊縫裂開 返回 welded seam