利用AutoCAD的开放式结构，开发出用户的专用菜单和图形库。

User menus and graphics libraries for special purpose are developed by using the opening structure of Auto CAD.

youdao

利用AutoCAD的开放式结构，开发出用户的专用菜单和图形库。

User menus and graphics libraries for special purpose are developed by using the opening structure of Auto CAD.

youdao