常見(jiàn)例句雙語(yǔ)例句This paper introduces the structure and economic benefit of the electric boiler heat reservoir, points out the obvious economic and social benefit of this technology.介紹了電鍋爐蓄熱裝置的結(jié)構(gòu)和經(jīng)濟(jì)利益，指出了該技術(shù)具有明顯的經(jīng)濟(jì)效益和社會(huì)效益。 返回 electric boiler heat reservoir