几何尺寸与公差论坛------致力于产品几何量公差标准GD&T (GDT:ASME)|New GPS(ISO)研究/CAD设计/CAM加工/CMM测量 (http://www.dimcax.com/hust/index.php)

-   DirectDWG (http://www.dimcax.com/hust/forumdisplay.php?f=89)

-   -   Nick's Intro Post (http://www.dimcax.com/hust/showthread.php?t=31864)