Based on the analyse of current 3d CAD design system, the basic conception of 4d information model is expounded.
在对当前三维CAD设计系统进行分析的基础上，阐述了4d信息模型的基本概念。
I had no 3d skills and no job because all the design firms were only hiring CAD jockeys at that time.
我不会3维技术，找不到工作，因为那时候所有的设计公司只要软件高人。
The key problems of panel die CAD is the design and analysis of 3D die surfaces.
覆盖件模具CAD的难点在于模具接触曲面的设计和分析。
This paper provides a hierarchical semantic model for the design of complex products based on existing 3D CAD software.
针对复杂产品的设计建模提出了一个层次语义模型。
An advanced 3d CAD system based-ACIS platform is introduced, including its design, development and application.
该文介绍了一个基于ACIS平台的大型三维CAD系统的设计、开发与应用。
The rapid development of CAD/CAM based on computer graphics, the education of engineering graphics should pay attention to the culture of 2D design and 3D design.
随着以计算机图形学为主要基础的CAD/CAM的迅猛发展，要求工程图学教育进行二维设计与三维设计并重的双重培养。
RESULTS The 3D contour image of femoral condyle was presented which can be edited and processed arbitrarily for computer aided design (CAD) of artificial bioactive bone.
结果获得了股骨髁表面轮廓三维实体模型，模型与实物高度相似，可编辑性强，可进行生物工程活性骨的计算机辅助设计、制造。
The method and technology of virtual 3d assembly are discussed, and the method of the valve assembly CAD design and emulation concept-oriented design is pointed out in the paper.
探讨了面向概念设计的产品虚拟三维装配建模过程和三维建模方法，提出了面向概念设计阀门装配CAD设计与仿真的思想和方法。
The main content includes the design of original data collecting system, Image preprocessing, selection and algorithm of filtering method, points cloud creating, reconstruction of 3d CAD model.
主要研究内容包括：数据采集系统设计、图像预处理、滤波方法的选择及其算法、点云生成、三维CAD模型重构。
Some key technologies of the founding of 3d CAD model are advanced on the base of the practicing design experience on the development of the system in the third part.
第三部分根据系统开发的实际设计经验，提出了建立三维CAD模型的一些关键技术。
Having analyzed 3d parameterized design technique, a product-level parameterized variant design method was presented based on CAD system, parametric thinking and hierarchical table in database.
在分析当前三维参数化设计技术的基础上，结合CAD系统、参数化思想和层次型数据表技术，提出了一种产品级的参数化变型设计方法。
This paper propose a method of reverse design for photograph image, and develop a CAD platform with reverse design and 3d surface reconstruction.
这里对照片影像反求设计方法作了较深入的探讨。在此基础上，研制开发了基于照片影像的反求设计及三维仿真的CAD平台。
The several current mechanical CAD software has the shortcoming of poor human-computer interaction, can not finish structural design and 3d graphics drawing and so on.
而现有的几种机械CAD软件存在交互性差、不能进行结构设计和三维绘图等不足。
In computation on blade grounding tool design in technical preparation, accurate blade passage data necessary for tool design has been obtained using free camber modeling technique of 3d CAD.
以生产准备中磨叶片工具的计算为例，使用三维CAD系统的自由曲面建模技术，精确计算出叶片工具设计中所需叶片通道数据。
The design method of CAD leather shoe last was described, concrete procedures and relative process charts were given in the paper. so it is referential to the 3d process design of CAD.
本文概括地描述了鞋楦三维造型的方法，给出了具体步骤和相应地程序流程图，对于计算机三维造型的程序设计具有参考价值。
Some relative key techniques including the design of 3D data model, database management based on Oracle, the fusion between CAD data and GIS data, sunlight analysis and so on are emphasized.
对涉及到的关键技术包括三维数据模型的实现、二维数据的嵌入与操作、日照分析关键技术等都进行了详尽的介绍。
Some relative key techniques including the design of 3D data model, database management based on Oracle, the fusion between CAD data and GIS data, sunlight analysis and so on are emphasized.
对涉及到的关键技术包括三维数据模型的实现、二维数据的嵌入与操作、日照分析关键技术等都进行了详尽的介绍。
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