The analytical method in time often are used with the analytical method in frequency as they are special characteristic, however, the method based on mathematic transform is used in power energy quality analysis widely.

 
  • 它们各有特点,使用时常将时频率分析方法结合起来使用,但基于数字变换的分析方法在电能质量应用中得到了更广泛的应用。
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