The deficiencies in current methods of cylinder design are studied and a new method for CAD software development-Computer-Aided-Design with varible structure is presented.
本文分析了目前液压缸设计方法的不足，提出了一种开发CAD软件的新方法——计算机辅助变结构设计方法。
The DXF file format is one of the widely used graphics exchange formats in the graphics application development, and the lots of CAD software have supported it.
DXF文件格式是图形开发中最常用的图形交换格式之一，众多CAD软件都支持它。
Formerly, In order to create the standardized parts quickly, the designer must cost more time and energy on the secondary development of the CAD software.
以往为了能在实际设计工作中快速方便的生成标准件，模具设计人员需事先花大量时间和精力对CAD软件进行二次开发建立模具标准件库。
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