• 1. autonomous vibration: 自激振荡
• 2. nonlinear autonomous vibration: 非线性自主振动

• 1.On the basis of phase space analysis about measured vibration signals, the characteristics of special nonlinear autonomous vibration about the structure included in the system were obtained.
  在实测的振动信号相空间分析的基础上，得到系统所包含的结构振动的特殊非线性自主振动的特征。
  dict.yoduao.com
• 2.The forced vibration of pendulum is described by four-dimensional phase space and the fourth order autonomous ordinary differential equation.
  本文用四维相空间和四阶自洽常微分方程描写了单摆的受迫振动。
  dict.yoduao.com

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