描绘了一个三种频率四个端点的图，行这个图纸呢更可以进行小波变换和HHT你是内环，通过结果说明HHt谱与时间的关系-Depicts a figure three frequencies of the four endpoints, line drawings that can do more wavelet transform and inner HHT you are, by the results illustrate the relationship between the spectrum