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
(Knowledge of the nonlinear dynamics of chaotic behavior, can 通过 Painting Movement of the bifurcation diagram to study the impact of parameters on the movement, this program in order to achieve the Lorentz force as an example of bifurcation diagram drawing)