用于2维有限元分析前处理，可以方便的实现三角形网格剖分-This small code is used for triangular mesh generation in the preprocessing phase of finite element analysis.

本文件是2ask仿真代码。振幅键控是利用载波的幅度变化来传递数字信息，而频率和初始相位保持不变。-This document is 2ask simulation code. Amplitude shift keying of the carrier amplitude variation is the use of digital information to transmit, and the frequency and initial phase remains unchanged.

绘制两个信号的幅度、相位曲线 代码简洁-Draw two signal amplitude and phase curve Concise code!!!!!!!!!!!!!!!!!!!!

可供非线性动力学专业的学生画非线性碰撞的映射图和相平面图，相关专业源代码很少，希望互相分享。-Videos nonlinear students for professional nonlinear dynamics of the collision map and phase plane, rarely relevant professional source code, I hope to share with each other.