Engineering drawing interpretation ( edi ) is a kind of acquisition behavior of product information on the base of engineering drawing . it emerged as a vibrant area of interdisciplinary research , attracting the efforts of computer graphics scientists , artificial intelligent scientists , cognitive psychologists and etc . this research can be traced back to sixties in twenty century , whereas the result is still far from the desired purpose up to date 产品信息的描述、传递和获取是计算机辅助设计和计算机图形学所要解决的一个基本问题，工程图样理解是基于工程图样的产品信息获取行为，是一个工程图学、计算机图形学、认知行为学以及计算机辅助设计技术等多个研究领域相互交叉的课题，也是近三十年来计算机应用技术研究中的一个重要方向。
In chapter 5 , based on the target of experiment teaching , the direction of the ability - cultivating in graphics teaching is established . teaching scheme of the experiment is designed . the experiment content is organized as follows : experiment requirement , experiment purpose , knowledge in earlier stage , experiment tool , experiment measure 第五章，根据工程图学实验的教学目的，确定了工程图学实验教学能力培养的目标和体系，设计了工程图学实验教学方案，从实验要求、实验目的、实验前期知识、实验步骤、实验工具等方面组织了实验教学方案。
In chapter 2 , characteristics of the computer - aided instruction and superiority of network courseware are analyzed . the principle , tactics developing courseware and the method to design material are discussed . the author designs ensemble architecture , function , realizing technology , and platform of the network system 第二章，本章分析了cai的特点及网络cai的优越性，介绍了工程图学实验网络课件的开发策略、原则、素材设计方法，设计了网络课件系统的总体结构、功能，讨论了系统的安全问题、实现技术和运行环境。
