General situation in gas recovery system was described in Cangzhou refinery. Its recovery and utilization are of considerable social and economic benefits.
介绍了沧州炼油厂瓦斯气回收系统的概况，及瓦斯气回收利用的社会效益和经济效益。
This article introduces the form of no-interference switch systems of inverter and its application in Cangzhou oil refinery. and the effect of this system.
介绍了变频器无扰切换系统的构成和在沧州炼油厂的应用，以及该系统的应用效果。
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