This paper expounded how to clear the fault for hoist control system with the other wire method, so that an effective way was provided for some trouble shooting for hoist.
具体阐述了如何用它线法排除提升机控制系统的故障，从而为提升机控制系统某些故障的排除提供了有效途径。
The common way of electric trouble judgement for numerical control machine is introduced.
介绍了数控机床电气故障判别的一般方法。
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