短語詞組短語surface economiser 表面式經濟器Petrol economiser 省油器loop economiser 盤管式經濟器fuel economiser 節(jié)油器;燃料節(jié)省器water economiser 給水節(jié)熱器continuous -loop economiser 盤管式經濟器economiser economizer surface 經濟器受熱面economiser economizer economiser 經濟器 返回 economiser