This paper introduces the constant - current system modification for energy conservation in Ningxia Qingtongxia Aluminum Group.
本文介绍了宁夏青铜峡铝业集团公司,不断改造电解直流稳流系统,达到节能增效的目的.
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Such includes periodic system servicing, anticipated system modification or add - on, and temporary component hookups.
这些地方包括需要定期系统维修, 预计需要系统改造或加装, 以及需要临时性部件连接,等等.
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