求翻译：在电磁法中是指其它条件不变时，导体的*二次场随*—次场频率变化而变化的关系。利用在异常体上实测的频率特性曲线，可以确定异常体引起异常的最佳频率；对比实测和理论频率特性曲线可以对所获得的资料进行半定量解释。是什么意思？

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In the electromagnetic law refers when other conditions remained unchanged and the conductor of a * 2 * - Meeting with the frequency, which changes the relationship. Use the real test of the Commonwealth in abnormal frequency characteristic curve, you can determine the best frequency anomalies arisi

When the electric-magnetic method is refers to other conditions invariably, the conductor * two fields the relations which changes along with * - the inferior field repetition rate rate change.Use on unusual body actual frequency response curve, may determine the unusual body causes the unusual best

Electromagnetic method when refers to other things being equal, conductor * quadratic field *-field frequency change due to relationship. Using measured frequency response curve on the exception, you can determine the optimal frequency of exceptions caused by abnormal; comparison between observed an

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