secret switch
密封式开关箱 hermetically-sealed switch box
密封式保险开关 safety enclosed switch
密封式闸刀开关 safety enclosed switch
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本文介绍了大型铁合金密封式矿热炉安装备用开关的工作原理及使用效果。
This paper presents installation of spare switches in a large iron alloy seal type electric heat furnace. It also describes working principles and utilization efficiency of the spare switches.
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