Unverified82% confidenceTradeoffTime unknown
非接触检测便捷但精度低，接触式钳形测量准确但需断开或钳入线缆操作繁琐；快速定位问题区域用感应笔，确认具体数值用钳表，两者互补而非替代
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82%
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Long-term
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