The study result demonstrates that the doublependulum system is of abundant chaos.
研究结果表明：双杆摆系统有着丰富的混沌现象。
2
Parametrically excited doublependulum belongs to 2 degree freedom time-varying system, it is a basis to study nonlinear dynamics of multi-degree freedom system and elastic beam.
参数激励双摆属两自由度时变系统，是研究多自由度系统以及弹性体梁参激振动的基础。
3
If I double the mass of my Bob at the end of a pendulum, then the vertical component of the tension will also double.