This entry is missing Overview , add relevant content to make the entry more complete, and it can also be upgraded quickly. Hurry up edit Come on! Primary standards It is the most important and critical technical indicators and guidelines. The standard for measuring something is just because of people and things, but the most fundamental standard is constant, and the primary standard refers to this constant standard.
- Chinese name
- Primary standards
- Role
- The standard to measure something is just because of people and things
