管理学 信息分类 释 classification schedule 分类表 按照某分类系统中众多类目的相互关系，用标记符号代表各级类目及其次序编排而成，由类目体系、标记符号、说明与注释、类目索引四部分依据知识分类原理组成的分类体系。又称类表、类目表、文献分类表、图书分类表。
数据库 数据库新技术 释文 taxonomy 分类表
- user stack
- user study
- user survey method
- uses and gratifications approach
- U set
- U-set
- Use the Language of the Motherland Correctly, Fight for the Purity and Health of the Language!（Editorial）
- use value
- use value of forest resource
- use value of resources
- U.S.FDA
- USFDA
- U.S. Federal Aviation Administration
- U.S. Food and Drug Administration
- U.S. Government Publishing Office
- U.S.Government Publishing Office
- U-shaped
- U-shaped cells
- U-shaped curve
- U-shaped distribution
- U-shaped valley
- Ushihara Kyohiko
- Ushin
- Ush Rebellion
- USIA