The voltage reversal; (3)The ringing frequency;
放电振荡中的反峰电压：（3）振荡频率；
The Fourier spectrum of the wave moment shows that high frequency components will appear and they may cause ringing.
分析结果表明，极端波浪作用下的波浪力矩包含高频成分，是结构物可能产生高频共振响应的原因。
Subsets of frequency response are physical microphonics, electronic ringing and oscillation, and acoustic ringing.
频率响应可分为物理微音效应、电子装置鸣响和摆动、声鸣响三组。
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