可以测量任意量图源的距离！并有提示说明,,希望朋友们能够喜欢！-Can measure any distance from the source volume chart! There are tips and instructions, and hope you will like them!

可以快速计算多个封闭区域的面积之和，使用说明在包内-You can quickly calculate the area of a plurality of closed area and, using instructions in the package

AutoCad2010版DXF组码说明，在用ObjectARX开发AutoCad程序时，可能会用到图元的组码，通过本文档可快速查找实体对应的组码，方便开发。-Version AutoCad2010 DXF group codes described in AutoCad program development time by ObjectARX, may be used primitive group codes, through this document can quickly find t