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3 个月
如何用摇表测量三相电机的好坏?这7张图一次性教会你!电工须知
如果检测电机的好坏? 1、摇表摇,500v的摇表即可,摇三个接线柱上的线对电机外壳的绝缘阻值,应该在0.5m欧以上就说明没有对地短路。 2、万用表 ...
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Matt Gaetz ethics report
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‘Workaholics’ actor dies
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Legacy Chinese chips probe
Probe into recalls closed
Ex-cop convicted of lying
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