中文说明：利用非线性动力学的知识研究混沌行为，可以通过画运动的分岔图来研究参数变化对运动的影响，本程序以洛伦兹力为例子实现了分岔图的绘制
English Description：
Using the knowledge of nonlinear dynamics to study chaotic behavior, we can study the influence of parameter changes on motion by drawing bifurcation diagram of motion. This program takes Lorentz force as an example to realize the drawing of bifurcation diagram