Draft Document - Aerospace series - LOTAR - LOng Term Archiving and Retrieval of digital technical product documentation such as 3D CAD and PDM data - Part 121: Semantic representation of CAD 3D Explicit Geometry with Product and Manufacturing Information; German and English version FprEN 9300-121:2019
文件草稿.航空航天系列.LOTAR.数字技术产品文件(如3D CAD和PDM数据)的长期存档和检索.第121部分:带有产品和制造信息的CAD 3D显式几何图形的语义表示;德语和英语版本FprEN 9300-121:2