数据库 数据库管理系统及其实现技术 释文 data manipulation language, DML 数据操纵语言
- rackwork
- racon
- racoondog fiber
- ractopamine
- RAD
- rad
- RADA
- Radama I reform
- radar
- radar absorbing material
- radar absorbing materials
- radar active jamming pattern
- radar altimeter
- radar ambiguity function
- radar antenna
- radar anti-jamming
- radar anti-reconnaissance
- radar area related guidance
- radar astronomy
- radar beacon
- radar beam riding guidance
- radar beam riding semi-active radar homing combined guidance
- radar camouflage
- radar carrier frequency
- radar chart