GB/T 16656.503-2004
工业自动化系统与集成 产品数据表达与交换 第503部分;应用解释构造:几何有界二维线框
Industrial automation systems and integration Product data representation and exchange Part 503:Application interpreted construct:Geometrically bounded 2D wireframe
GBT16656.503-2004, GB16656.503-2004