理学 数据库系统设计 释 semantic data model 语义数据模型 一种基于高层语义的数据库描述和结构形式，是具有较强的语义功能的模型。
数据库 数据库应用开发 释文 semantic data model 语义数据模型
- aerosol filter sampler
- aerosol fire extinguishing system
- aerosol optical properties instrument
- aerosol particle size distribution measuring instrument
- aerosol remote sensing
- aerosols
- aerosols for inhalation
- aerosols for non-inhalation
- aerosol size distribution
- aerosol sonde
- aerospace
- AeroSpace and Defence Industries Association of Europe
- Aerospace Archives
- Aerospace China
- aerospace cognitive physiology
- aerospace control
- aerospace control system simulation
- aerospacecraft
- aerospace defense system
- aerospace ground equipment
- aerospace initiating explosive device test
- Aerospace Knowledge
- aerospace manufacturing
- aerospace material
- aerospace medical physics