短語詞組短語Welding argon -arc 氬弧焊接法Welding direct -current arc 直流電弧焊接argon shielded arc welding -pulsed arc 脈沖氬弧焊gas metal arc welding -pulsed arc 熔化極脈沖氬弧焊gas tungsten arc welding -pulsed arc 鎢極脈沖氬弧焊welding rod electric -arc welding 焊條電弧焊welding wire for submerged -arc welding [機(jī)]埋弧焊絲gas metal -arc welding-short circuiting arc 短路焊nitrogen -arc welding 氮弧焊 返回 welding arc