短語詞組短語AC TIG welding arc 交流TIG電弧TIG Arc welding machine 鎢極氬弧銲機(jī)tig arc welding tig 銲接pulsed tig arc welding 脈沖鎢極氬弧銲arc tig welding tig 銲TIG -Tungsten Inert Gas Arc Welding 鎢極惰性氣躰保護(hù)銲 返回 tig welding arc