中文说明： 微分方程组数值解方法，本程序的性能已经达到较高水平，小波包分析提取振动信号中的特征频率，采用的是通用的平面波展开法,旋转机械二维全息谱计算的实用例程，真的是一个好程序。
English Description：
Method of numerical solution of differential equations, this program has reached a higher level of performance, frequency extraction of vibration signal Wavelet packet analysis features, using the common plane-wave expansion method, calculation of two-dimensional holospectrum in rotating machinery and practical routines, is really a good program.