几何结构

Chapter 2, the structure of bilateral symmetrical drive parts having large feeding force is presented, the researches on the relation of feeding quantity with input power, invert efficiency, physical parameters, geometrical parameters, and environmental factors is made, and the response and nonlinear characteristic of the drive parts is analyzed.

第二章，首次提出双边对称驱动的具有大进给力的纳米级热驱动部件结构，研究驱动部件进给量与输入功率、转化效率、物理参数、几何参数，以及环境因素之间的关系，并且分析驱动部件的响应特性和非线性特性。

Along with operations of the turning, sharpping, drilling, milling and grinding, some new methods, technologies and processings such as overlap workpieces, improved cutting tool formes, workpiece charmfer, adjustment of cutting parameters and others to restrain and decrease burrs in size are developed, which have noticeable theoretical significance and wide practical value in the precision cutting, FMS and automatic machining.

结合车削、刨削、钻削、铣削和磨削等加工，开发出了斜置工件法，双主偏角刀具切削法、切削用量选择法、刀具几何参数调整法、工件叠加切削法、工件终端部材料脆化法、工件终端部倒角法、挡板切削法、刀具结构改进法和切削方式选择法等十数种抑制或减小切削毛刺的技术、工艺和方法，在精密加工、柔性制造系统和其它自动化加工中有较大的实际应用价值。

It should focuses on dimension accuracy and standardized performance for the design of athletics play ground with plastic track .

塑胶跑道田径场的设计强调几何尺寸的准确性和内在性能的标准化，并以塑胶铺设区的结构层次与田径场内的给排水系统作为设计的重点。

The concept of air floating decrease coefficient was introduced and thecomputing method about correlative parameters and stability indications of staticstability were studied considering the geometry parameters, air pressure and differentdrafts. Based on the theoretical methods of the statics of the ship, computing methodon static stability of steel cylinder block is given, the stability properties of thestructure block made up of four steel cylinders whose diameter is 10.5m werecalculated under six kinds of drafts and different aeration heights, the initialmetacenetric height of the structure block was obtained, and the stability wasevaluated under different floating conditions.

本文考虑气浮钢筒组块的几何参数、充气压力，及不同的吃水，引入气浮力折减系数的概念，研究与静稳性有关的参数和稳性指标的计算方法，基于船舶静力学的理论方法，提出了钢筒组块静稳性的计算方法，计算了四个直径10.5m的钢筒组成的结构模块在6种不同吃水及不同充气高度下的稳性指标，得到了模块的初稳性高，评估了不同浮态下的稳性。

The book is structured so that the reader may choose parts of the text to read and still take away a completed picture of some area of differential geometry Beginning at the introductory level with curves in Euclidean space, the sections become more challenging, arriving finally at the advanced topics which form the greatest part of the book

这本书是结构，以便读者可以选择部分文本阅读，还带了一个完整的画面，有些地区的差从入门级几何线条的部分，在欧氏空间变得更有挑战性，终于到达了高级的主题，形成了最大的一部分，这本书

Through the research of the formation of the frame, it is found that the tilted frame is more stable than the ordinary one because the tilted column increased its lateral stiffness and thus its displacement and librations are decreased.

研究表明改变框架的几何形状，使外柱略微倾斜的办法可以增加结构的抗侧移刚度，获得较好的稳定性；从而相应地减小侧向荷载引起的位移和振动。

By analyzing the structure singularity and configuration singularity with the screw theory and the line geometry method, the fundamental conditions of generating the motion singularity are obtained.

本文采用螺旋理论和线几何方法对结构奇异以及配置奇异进行分析，从而得到运动奇异位形产生所满足的条件，并给出3-PRPS并联机器人奇异位形图解说明了该方法的可行性。

On the side of exterior deformation monitoring, this dissertation proposes and proves the utility monitoring scheme by using general ground monitoring technology and the method of simplification differentiation polar coordinate survey for large span space structure deformation monitoring. On the side of stress measurement, this dissertation proposes an new method of stress measurement suit for mass concrete triangular frame and discusses shrinkage and creep of concrete how to influence stress measurement, and sets up finally a process how to calculate concrete stress through data for piano wire sensors. Finally, on the side of cable forces measurement, this dissertation discusses principle and measurement technology of frequency method.

在外部变形测量方面，本文提出并验证了一套利用常规地面监测技术监测大跨度空间结构几何变形的实用方案及一种简化的差分极坐标测量方法；在应力测量方面，本文提出了一种适用于大型混凝土三角刚架应力监测的新方法，研究了混凝土的收缩徐变对应力测量的影响，并在此基础上建立了一套由振弦式传感器的测试数据推算混凝土结构应力的流程；在索力测量方面，本文探讨了频率法测量索力的原理及实用测量技术。

On the base of 3D CAD software's fast modeling and meshing function, three kinds of radomes is modeled and meshed by tetrahedron firstly. And then the coefficients of electric flux density are received by fast moment method based on VIE.

本文首先借助三维CAD软件几何建模技术及网格离散技术，建立了三种结构的天线罩实体模型并用四面体单元离散，接着利用快速VIE-MoM计算出天线罩罩体区域的体极化电流，最终得到在罩体影响下的天线的远场辐射特性。

Aimed at a changing power mechanism,a ratchet mechanism with double electric pawls,we introduce the operating principle,establish its model and optimize the important geometry parameters in its structure design in this paper.

针对一种动力转换机构———弹性双棘爪棘轮机构，介绍了它的工作原理，对其结构设计中的重要几何参数建立了模型，进行了优化，为下一步的动力学优化设计打下了基础。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。