surface economiser表面式经济器
Petrol economiser省油器
loop economiser盘管式经济器
fuel economiser节油器;燃料节省器
water economiser给水节热器
continuous-loop economiser盘管式经济器
economiser economizer surface经济器受热面
economiser economizer economiser经济器
N(名词) a device that uses the waste heat from a boiler flue to preheat the feed water 节约装置