短語詞組短語Vacuum degas 鋼包精鍊或真空除氣degas ser 除氣器Degas Void 添加放氣孔degas s 除氣ultrasonic degas 超聲波脫氣Degas Conditions 脫氣條件Edger Degas 艾德加PVD Degas 除氣裝置Degas bottles 脫氣瓶 返回 degas