本文用比拟法推得了刚体一般运动的螺旋轴方程。
The screw axis equation of the general motion of a rigid body has been derived by means of a comparison method.
采用迭代法求解转向平面运动方程，计算结果与实车实验进行了对比。
The turning plane motion equations are solved by means of iterations, and on-vehicle experiment was carried out in order to compare with theoretical results.
采用折算系数法，建立了组合梁振动的运动微分方程，并对其振动特性进行了分析。
The differential equation of the vibration of combined beam is set up and its vibration characters are discussed in this paper.
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