1·The ideal simple pendulum movement is not practical though it is simple, and the practical case comes from the correction and improvement of the ideal case.
理想的单摆运动虽然简单却不实际，实际情况需要在理想情况的基础上进行修正和改进。
2·This paper studies the nonlinear motion law of a simple pendulum with damping factor.
本文研究具有阻尼因素的单摆非线性运动规律。
3·Analytical approximate periods and periodic solutions to large amplitude oscillation of a simple pendulum are constructed using a new method.
构造了单摆大振幅振动的高精度解析逼近周期和周期解。
4·Studying the equation of motion of damped simple pendulum, the shock wave solution is found.
研究和分析有阻尼单摆的运动方程，应用近似法方程时发现存在冲击波解并精确求解。
5·This is a simple pendulum model of the bifurcation behavior of the bifurcation diagram, is my collection, for your reference.
这是一个单摆模型的分岔行为的分岔图，是我珍藏的，供大家参考。