An electrical conductor looks the same whether it is live or dead.
电导体不管是否带电，表面看来都是一样的。
With the instrument the defects of the conductor on the high voltage overhead transmission line can be inspected whether the line is dead or in operation.
依据高压输电线的结构特点，可同时使用涡流检测原理和漏磁检测原理分别对导线的铝绞线和钢芯损伤情况进行检测。
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