短語詞組短語argon -arc welding joint 氬弧銲接頭argon tungsten arc welding 鎢極氫弧銲argon shielded arc welding -pulsed arc 脈沖氬弧銲tungsten argon -arc welding 鎢極氬弧銲manual argon tungsten arc welding 手工鎢極氬弧銲tungsten argon shielded arc welding 鎢極氬弧銲銲automatic impulse argon -arc welding 自動脈沖氬弧銲 返回 argon arc welding