利用三角函数作为一种近似方法，对单摆的动力学方程进行了简化，给出了大角度条件下单摆运动的周期的近似公式。
As an approximate method, with the trigonometric function, the simple pendulum dynamical equation is simplified, and the approximate formula for the period of simple pendulum movement is presented.
为提高灭茬刀辊设计的可靠性和效率，基于UG-NX 3软件，根据运动方程绘制刀刃运动轨迹，形象直观的获取动态隙角。
For improving the design reliability and efficiency of the stubble roller, visualized dynamic gap Angle was obtained though drawing blade moving track according to movement equation using ug - NX3.
研究结果表明：利用升角与升弓高之间的关系，可简化受电弓运动微分方程的推导；
The results show that the equations have benefit to the deduction of the pantograph's mechanical differential equations.
从分析其受的摩擦力出发，讨论了最大摆角变化的规律；计算摩擦力作功的简便方法；运动方程及振动经历的时间问题。
Starting with the friction underwent, we discuss the regularity of the variety of the max swing angle, the simple way to work out the friction doing work and the equation of motion etc.
本文用微分几何理论推导出纤维缠绕复合材料压力容器的非测地线缠绕轨迹、包角方程及绕丝头运动方程。
Non geodesic trajectory mandrel rotation and payout eye motion equations for fiber reinforced composite pressure vessels are derivated by theory of differential geometry.
采用微分方程高精度数值解法得到了随时间变化的摆角、摆长、摆长变化率以及运动轨迹的数值精确解。
The accurate numerical solutions of the angular displacement, the length and its rate, and the path are given with the numerical method.
在航母横摇角、纵摇角以及升沉位移已知的条件下，通过并联机构的运动学分析可以求得驱动滑块的位移方程。
We can gain the displacement equation of the slide block if we know the roll angle and pitching angle and the vertical displacement of carrier.
在航母横摇角、纵摇角以及升沉位移已知的条件下，通过并联机构的运动学分析可以求得驱动滑块的位移方程。
We can gain the displacement equation of the slide block if we know the roll angle and pitching angle and the vertical displacement of carrier.
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