The paper analyzes some main problems existed in electric control of the A. C. winder in Wangchao coal mine and introduces the improving way and effects.
分析了王晁煤矿提升机电控存在的主要问题，介绍了改进方法和效果。
The paper analyzes some main problems existed in electric control of the A. C. winder in Wangchao coal mine and introduces the improving way and effects.
分析了王晁煤矿提升机电控存在的主要问题，介绍了改进方法和效果。
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