这种方法克服了稳态电流测试方法测试频率低、瞬态电流测试方法对测试仪要求过高等问题，它能以电路的工作频率对电路进行测试，测试结果更准确，可以检测多种类型的故障。

By using it, the test can be done at the operation frequency of circuits under test, therefore results of the test can be more precise and this method can detect different types of faults.

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