为了解决CAD水平测试的自动化阅卷问题，实现AutoCAD绘图题的计算机判分，提取CAD图形数据信息是关键。研究了三维几何造型开发工具ACIS的模型及其存储文件SAT的格式，给出了一种从SAT文件中提取CAD图形数据信息的方法，通过实例验证了该方法的有效性和正确性。-CAD proficiency test in order to solve the problem of automated scoring, AutoCAD drawing to achieve sub-sub-theme co

用VC，ACIS开发的圆角生成程序，压缩包内还包括测试模型。-This is developed by vc and acis for generating blend.

这是《Pro/E Wildfire 4.0 二次开发实力解析》上面的第8章装配的例子对应的源代码，已通过测试。-This is the "Pro/E Wildfire 4.0 resolved the secondary development of strength," Chapter 8 of the above examples of the corresponding assembly source code has been tested.

C#实现的DXF开发类，包含源码，测试文档，类的说明文档(DXF development class implemented by C#)