查询词典 CAD

After analyses the desideration and functions of Integration Platform, the integration function of SmarTeam and I-DEAS is realized. A highly efficiency development platform for the sugarcane harvester is provided.

通过对甘蔗收获机械信息集成平台功能的需求分析和PDM与三维CAD软件I-DEAS的集成功能分析，实现了甘蔗收获机械虚拟设计平台与I-DEAS的集成功能，为丘陵地区甘蔗收获机械虚拟样机的研制提供了一个高效的设计开发平台。

The marker system in computer aid design is the hotspot and difficult problem in the study of CAD.

文摘要 ：计算机辅助设计技术是计算机科学与工程科学技术之间的跨学科的边缘科学。

CaD and desktop publishing continue to be improved with ever new and faster PCs.

电脑辅助设计和小规模出版业随着日新月异的个人电脑而改进。

The programs of the above methods und algorithms are developed, which shall be used in the system of developable surface modeling for CAD/CAM.

zier曲线的情形作了分析和比较。这些方法和算法均应用于实例在计算机上得以实现。

First, this paper, in the field of intrinsic geometry, studies the geometric problems on garment design, as well as applies the frame and semi-geodesic coordinates to prove the fundamental theorem of being a developable surface.

文中首先在内在几何学的层次上，研究了服装设计所涉及的几何学问题，应用标架与半测地坐标方法证明了曲面成为可展面的基本定理，研究了可展面的分类及其性质，考虑到服装三维几何造型的需要，证明了组合式可展面各组成片相切连接条件的命题，作为构造可展面的理论依据，证明了单参数平面族的包络面必为可展面的命题，在此基础上发展出服装几何造型的"刮大白"方法以及相关的三种构造可展面的解析方法。3D→2D的变换是三维服装CAD的重要内容之一，其几何学实质是曲面的定长映射，文中总结了定长映射即可展面在平面上展开的基本准则，在这一准则的指导下，结合服装设计与相关领域的要求，讨论了可展面在平面上展开的解析方法与数字方法，上述内容确立了服装设计几何学的基本框架。

Design method of farm machine products drop behind the one of manufactured products. To make our countrys design and manufacturing technology of dead stock to achieve the standard of developed country, to develop parallel with other machine manufacture, this article introduce CAD, optimization design, computer simulation technique into the design of the ditcher, to make its design more reasonable, much higher quality to bring social benefit, economic benefit, ecological significance.

我国农业机械产品的设计方法相对工业产品来说比较落后，为了使我国农机设计制造技术达到发达国家水平，与其它机械制造业平行发展，本文将计算机辅助设计、优化设计、计算机模拟技术引用到该机具的设计中，使该机具的设计更合理、更高质，使它尽快地产生社会效益、经济效益、生态效益。

Combining optimization design with CAD and automatizing completely the process of design have become a important development trend in design method field.A new-style ditcher for sluice and keeping soil humidity is a rotary, discontinuous ditcher. It mainly used in arid and semiarid area, dig pits to sluice in sloping field, meadow, fallow and wasteland.

新型蓄水保墒机具是一种旋转式间断开沟机，主要用在干旱半干旱地区，通过在坡地(＜15°)、草地、休闲地及不能及时耕种的撂荒地上开挖一些小坑来蓄积雨水，使雨水渗到地下，被作物自由吸收利用或补充地下水。

US dollar Speculative sentiment became more bearish last week according to the CFTC IMM data, with dollar bloc currencies including the AUD, NZD and CAD benefiting the most in terms of an increase in speculative appetite.

商品期货交易委员会的交易员持仓报告显示，美元投机情绪於上周更为悲观，美元集团货币包括澳元、纽元及加元最受惠於投机意欲上升。

A CAD method of clamping part p lan for the dowel - pin modular fixture is presented in this paper .

原型系统的实现表明此方法适用于简单零件压紧部件的方案设计。

These dimensions and all other non-dimensioned features in cad database are to be controlled by the drawing tolerance block.

这些尺寸及其他数据库中的未注尺寸特征都都按图纸给出的公差带。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失