The replacement of common smooth tubes by new spiral groove tubes during technical reconstruction of heat exchanger is both simple and remarkable energy-saving effectiveness.
用新型螺旋槽管代替普通光管对换热器进行技术改造，既简便易行，节能效果又显著。
This paper introduced grasping energy saving and technical reconstruction and applied new technology and realized economic benefits in foundery, south west Alwminium Industry Group Co.
本文介绍了西南铝业（集团）有限责任公司熔铸厂抓节能技术改造、采用新工艺及其实现的经济效益。
This paper introduced grasping energy saving and technical reconstruction and applied new technology and realized economic benefits in foundery, south west Alwminium Industry Group Co.
本文介绍了西南铝业（集团）有限责任公司熔铸厂抓节能技术改造、采用新工艺及其实现的经济效益。
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