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