Structuring principles for technical products and technical product documentation - Letter codes - Main classes and subclasses of objects according to their purpose and task
基本信息
标准号:
GB/T 20939-2007
名称:
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
英文名称:
Structuring principles for technical products and technical product documentation - Letter codes - Main classes and subclasses of objects according to their purpose and task