Standard Code | Standard Title | Standard Class | Order |
---|---|---|---|
GB/T 20939-2007 |
Structuring principles for technical products and technical product documentation - Letter codes - Main classes and subclasses of objects according to their purpose and task 技术产品及技术产品文件结构原则 字母代码 按项目用途和任务划分的主类和子类 |
China National Standards Structuring principles technical |
![]() English PDF |
Find out:1Items | To Page of: First -Previous-Next -Last | 1 |