Applicable environment USES high strength alloy enclosure, undertake special surface spraying and seal processing, can in hot humid and various corrosive such harsh environment for long-term use.
适用环境采用高强度合金外壳，进行特殊的表面喷涂和密封处理，可在高温潮湿和各种腐蚀性等恶劣环境下长期使用。
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.
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。
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