标准：对重复性事物和概念所做的

统一规定。它以科学、技术和
实践经验的综合成果为基础，
经有关方面协商一致，由主管
机构批准，以特定形式发布，
作为共同遵守的准则和依据。

Standards specify repeatability things and concepts. 
Based on achievements in science, technology and 
practice experience, agreed by concern parties and 
approved by competent authorities, they are issued 
and used consistently as rules, guidelines, or 
definitions of characteristics.