Using frequency spectrum analysis of phase function to calculate its auto power spectrum can reflect its frequency structure.
利用相函数的频谱分析求其自功率谱，可以反映它的频率结构。
2
The auto power spectrum curves of the dry parallel reactor are obtained from the prototype dynamic test.
通过干式空心并联电抗器的现场原型动力试验，得到该电抗器各方向的自功率谱曲线。
3
The auto power spectrum of phase function commonly has two extreme frequencies, and the corresponding frequency components decide the peak characteristics of phase function.