Based on network distance, GCA and GCAD, a MGCM of DGDN were designed.
基于网络距离机制、GCA和GCAD，设计了DGDN上的多级分组通信模型。
In China, GCAD (Garment Computer Aided Design) has almost 20 years history and also make great progress in technology.
在中国，服装计算机辅助设计(GCAD)已有近二十年的历史，在技术上也取得了长足的进步。
It is an inevitable trend for GCAD system to convert from 2D to 3D due to 3D computer technology's maturity and the necessity of customized garment.
服装CAD系统从二维向三维转变，是三维计算机技术成熟与服装个性化定制的一个必然趋势与结果。
Also it is important to import parametric design to GCAD, since it can significantly improve the automation degree and efficiency of apparel enterprises.
同时，其中引入参数化设计，对于提高服装业CAD自动化程度及其竞争力有重要意义。
This thesis displays the outcomes of the author's research on these two technologies after his analysis on the current research status and the remained problems of existed GCAD system.
本文在分析现有服装CAD系统的研究现状与存在问题的基础上，对这两种技术进行研究。
The surface mesh is used in a GCAD system DressingSim EX. Our research aims at NURBS surface models. The models are transferred from exterior CAD/CAM system to EX system by IGES files.
应用于EX系统的NURBS曲面模型是本文的主要研究对象，EX系统从外部CAD／CAM系统获取曲面模型参数信息，通过IGES文件传递，将参数化曲面模型转化为系统可操作的几何模型。
The surface mesh is used in a GCAD system DressingSim EX. Our research aims at NURBS surface models. The models are transferred from exterior CAD/CAM system to EX system by IGES files.
应用于EX系统的NURBS曲面模型是本文的主要研究对象，EX系统从外部CAD／CAM系统获取曲面模型参数信息，通过IGES文件传递，将参数化曲面模型转化为系统可操作的几何模型。
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