VC例程：该程序是由VC编写完整的信封打印源代码-VC routines : that the procedure was prepared by the VC integrity of the source code envelope Print

提取振动曲线的波峰和波谷值，返回对应的坐标值和峰值。-extract vibration curve peaks and trough values corresponding to the coordinates of the peak value.

此程序可以帮助通信专业人士学习关于 税利衰落包络。请用MATLAB运行-this procedure can help communications professionals to learn about tax and profit decline on the envelope. Please use MATLAB