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1·The free vibration of a free thick rectangular plate is analyzed.

对弹性地基上四边自由矩形厚板的自由振动进行了分析。

2·The analytic method for the free vibration of plane frame structure is presented.

介绍了一种平面杆系结构自由振动的解析解法。

3·The precise solution of free vibration equation of flat conical shall is presented.

对于扁锥壳的非线性动力自由振动方程，给出了准确解。

4·Finally, the cases of free vibration, impulsive response and moving load are also discussed.

最后对自由振动，脉冲激励和运动载荷情况分别进行了讨论。

5·There exists transition point in the free vibration of revolution shells at some special frequencies.

旋转薄壳的自由振动在特定频段存在转点现象。

6·The spline function is used in the analysis of free vibration problem of plates on elastic foundation.

本文提出一种用样条函数分析弹性地基板自由振动的新方法。

7·A kind of free vibration equation of the nonlinear dynamical system is solved to study chaotic movement.

为了讨论混沌运动，对一类非线性动力系统的自由振动方程进行了求解。

8·The in-plane free vibration frequencies and nonlinear internal resonance of circular arches were studied.

对圆弧拱面内自由振动的频率和非线性内共振现象进行了研究。

9·The paper presents a method combined test with theory for free vibration of wheel with outer taper shell.

对外缘带锥壳的轮盘固有振动问题提出了一种试验与理论计算相结合的方法。

10·The finite element model of the free vibration for the rigid suspension catenary and pantograph is set up.

建立刚性悬挂接触网的自由振动有限元模型，计算其固有频率和振型。