运动学的

This thesis calculates effects of the Magnus and Saffman forces on the saltation height and distance of sand grains and vertical concentration distribution of Aeolian sand flow by combinations wind tunnel experiment data and motion model of saltating sand grains.

本文结合风洞实验数据、沙粒跃移运动学模型与风沙流的垂向分布模型，数值计算了Magnus与Saffman效应对跃移沙粒的跃移高度、跃移距离以及风沙流垂向质量浓度分布的影响。

Moreover, the more deep research has been given, such as introduction to working mechanism and design principle, kinematics analysis of planet gear transmission system by the method of theorem of finite distance.

运用点的复合运动和刚体空间运动的有限位移定理对行星轮传动系统进行了运动学分析，并进一步探讨了搅拌螺杆的工作机理与设计原则。

Synthesizing the degrees of freedom of both rotor and helicopter body, and involving time derivatives of flap motion coefficient and induced velocity model derived from vortex theory, the governing equations of helicopter maneuvering flight are derived properly, with combination of kinematic equations and dynamic equations.

集旋翼和机体之自由度并计及挥舞运动系数对时间的导数和涡流理论的诱速模型，把运动学方程和动力学方程组合起来，从而导出了机动飞行的控制方程。

The principles of kinematics of spatial mechanism are used to establish spaceanalysis model of the typical steering linkage in light trucks and the kinematicsanalysis has been done. Then we finish the multi-objective optimal design of steeringspace linkage system in order to improve the stability of maneuvering characteristicsas good as possible.

本课题主要通过空间机构学原理，对轻型载货汽车普遍采用的典型的转向传动机构，建立空间分析模型，进行运动学分析，然后运用优化设计理论，对转向系统空间杆系进行多目标优化设计，从而最大程度地提高轻型载货汽车的操纵稳定性。

The theory of multibody system dynamics is used to simulate valve trains' kinematics and dynamics characteristics, and the methods of establishing and analyzing the multibody system dynamics model for valve trains are discussed.

运用多体系统动力学的原理来模拟配气机构的运动学和动力学特性，讨论了配气机构多体系统动力学建模和分析的方法。

Based on crystalline plasticity slip and strain hardening model, a rate-independent polycrystalline plasticity model was developed and introduced into finite element method.

基于晶体塑性变形的滑移机理和微观硬化机制，建立了相应的运动学描述和基于率无关的晶体本构方程。

Firstly, we analyze the singularity conditions and separate the singularity parameters from the Jacobian inverse. Then, the damped reciprocals are used to avoid the singularities by replacing their reciprocals.

首先， 分析产生奇异的条件，将导致 Jacobian 奇异的参数分离出来，然后用阻尼倒数代替其普通倒数，以回避运动学奇异的影响。

Therefore, the kinematic/dynamic simulation analyses of suspension plays a very important role in suspensions design and exploitation.

悬架的运动学/动力学仿真分析在汽车悬架系统的设计和开发中占有重要的地位。

We analyzed their movement characteristics by barbell and weightlifters' sports data.

通过分析抓举过程中杠铃重心和身体重心在前后、左右、垂直三个方向上的运动以及身体主要环节的运动学参数，研究运动员抓举过程中的动作技术特征。

The manipulators in a closed chain have to be constrained in their kenimatic and kinetic formulations, in addition to deal with their highly nonlinearities and strong coupling between joints.

在闭合链中，各机械手的控制除了要涉及自身动力学方程的高度非线性和强耦合之外，还要考虑闭合链对它们的运动学和动力学约束。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。