The function of animating roadway'shape is very important part of road CAD system.

公路线形动画的实现是公路CAD系统的一个必要的组成部分。

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The application of CAD technology in survey and design of the highway bridge promotes the technological progress of road transport industry.

介绍CAD技术在公路桥梁勘察设计中的应用，促进了公路交通行业的技术进步。

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It USES the last computer technology in the road design. A road and Interchange CAD system is developed on the foundation with the method.

它将计算机辅助设计的最新技术应用于道路设计，并在此研究基础上开发出用于道路立交设计的CAD系统。

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