运动学的

This thesis aimed at this hotspot, also one of the important regions during the Ninth-and Tenth-Five-Year-Program periods of Chinese Antarctic research. It made use of Radio Echo-Sounding data, surface horizontal ice flow velocity data, digital elevation model data, surface mass accumulation data and the data concerning melting at the bottom of Amery Ice Shelf , to study the grounding line, mass balance, and ice kinematic characteristics of grounded ice sheet and floating ice shelf respectively.

本论文瞄准国际上的这一研究热点地区，同时也是我国&九五&及&十五&期间的南极研究重点地区，利用无线电回波测厚数据、冰面流速数据、数字高程模型数据、冰面物质积累数据及冰架底部融化数据等，对该地区的接地线、物质平衡、陆地冰盖和漂浮冰架的冰川运动学特征等进行了研究。

The plastic deformation mechanism of the process is explained. The vector equations of the curved conical surface and the figure of the particle motion for the forming process of the bending tube are presented. The theoretical model of stress and strain fields of the forming process is deduced. The practical forming process of tubes of large diameter demonstrates the validity of the new type of design method of the ox-horned core bar and the computation formula of the length of the raw tube.

本文通过研究弯管成形瞬时应力、应变状态及演化过程，阐明了弯管成形过程受力变形特点及力学原理；提出了一种适合弯管变形分析的新单元及数值方法；建立了弯管成形过程应力、应变场&标准图象&；通过研究弯管成形过程金属流动规律及力学条件，阐明了本工艺塑性变形机理；建立了描述弯管成形过程的曲锥面向量方程及其质点运动学图象；推导了弯管成形过程应力、应变场理论模型；结合大口径弯管生产过程，验证了本文给出的新型牛角芯棒设计方法和管坯长度计算公式的正确性。

Kinematics model of elastic rubber parts, first is the simplified three vertical springs 22, in which an alternative to rubber axial deformation, and the other two vertical springs alternative to radial deformation of rubber parts.

弹性运动学模型中首先是橡胶件简化成三根两两垂直的弹簧，其中一根替代橡胶件的轴向变形，另两根垂直的弹簧替代橡胶件的径向变形。

In this dissertation, on the basis of the rolling principle and kinematic analysis for the drive pairs, a new idea of the revolutionary surface envelope globoidal worm gearing with rolling friction and point engagement is proposed; the point engagement theory, the engaging features, the mechanism errors and adaptation, the engaging efficiency, and the design and machining technology are systematically studied; the prototype is manufactured and the experiment is performed, and the related theory and technology are verified.

本文在对传动副实现滚动的机理及运动学分析的基础上，提出了滚动式回转面包络点啮合环面蜗杆传动的基本构思与技术框架，并深入系统地研究了滚动式回转面包络点啮合环面蜗杆副的啮合原理、啮合特性、误差敏度及适应性、啮合效率、设计和制造方法；研制了原型机并进行了原型机实验等。

Aiming at the key technology of numerical control, taking NC gear shaper as research object, some issues are studied in this paper.1 NC gear shaper YK5120 was developed.1 Three dimensional model of NC gear shaper is built, kinematics simulation and interference checking of NC gear shaper are carried out.2 Based on kinematic theory of multi-body system, the precision of gear shaper and the error of generated gear are analyzed and simulated.3 Applying finite element software, the natural frequency and mode of NC gear shaper are analyzed.

本文针对插齿机数控化中的关键技术，以数控插齿机为研究对象，做了以下研究工作：1 设计完成YK5120型数控插齿机机械结构；2 建立了数控插齿机的三维模型，并对其进行了运动仿真和干涉检验；3 以多体系统运动学理论为基础，对数控插齿机的精度和齿轮加工误差进行了分析与仿真；4 应用有限元软件，对数控插齿机的各阶固有频率及振型进行了分析。

According to study and analyze the crab_like machine, this paper breaks the traditional joint model, making use of the three degree of freedom parallel mechanism, establishing the joint mechanism, and doing the kinematical and dynamical calculation for ...

通过对生物蟹关节的分析研究，本文打破传统的关节方式，利用三自由度并联机构的方法，建立了蟹关节的机构模型，并且对机构进行了运动学与动力学计算。

The shearing and E-dip lineations of the plutons near the Shangdan subduction zone proves that the zone underwent thrust→thrust-sinistral shear→sinistral slip, revealing the lateral move and elevation of the core complex from the deep to low levels and a dynamic evolution of oblique subduction-collision.

商丹构造带边缘花岗岩体左行剪切及东倾伏的拉伸线理证实，商丹带经历了逆冲→逆-左行→左行三个阶段的递进演化，为秦岭杂岩相对由深部到浅部向西侧向运移抬升的认识提供了坚实依据，并揭示了一种斜向俯冲—碰撞的运动学、动力学演化过程。

High-and low-arched people easily lead to mechanical deviations that placed them at increased risk for injury due to their lower extremity structural deviations.

高足弓与低足弓是足部结构异常特殊族群，由於解剖构造上的差异使他们在从事身体活动时下肢所呈现在运动学与动力学的差异不但增加了伤害的可能性，也同时描述两种足型不同的伤害属性。

It mainly includes two parts,the polygonal effect of the roller chain drive and the position of the guided orbit of sheet offset press.

从链传动的多边形效应入手，结合印刷机上支撑导轨的实际布局情况，对收纸链条进行运动学分析，从而得到单张纸印刷机收纸不稳的根本原因，并提出一些相应的改进措施。

By using ADAMS/view,a simulation model of stopper is established which is based on analysis of its characteristics of variable structure ,some main problems of stopper are found by motion simulation analyzing,and optimization and self-adjustable structure without overconstraints of stopper is also made.

在分析变结构堵渣机的结构特征基础上，利用ADAMS软件建立了仿真模型，通过机构的运动学、动力学仿真分析，找出了机构存在的主要问题；并对机构进行了优化及无过约束的自调结构设计。

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。