说明：  软件可以实现对时域范围内的摩擦力的数据处理，同时可以对显示二维的摩擦力随时间变化规律及三维角度的摩擦力-位移-时间三变量的变化规律，最后可以将所绘制的图像进行导出。
(The software can realize the data processing of the friction in the time domain, and can change the friction law of the two-dimensional friction and the three-dimensional friction-displacement-time three variables. Finally, Image is exported.)