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
- satellite-sensed event
- satellite sequence
- satellites of Jupiter
- satellites of Mars
- satellites of Neptune
- satellites of Pluto
- Satellites of Saturn
- Satellites of Uranus
- satellite structure
- satellite sunspot
- satellite switching and routing technology
- satellite system
- satellite television
- Satellite Television Asian Region Limited
- satellite television broadcasting
- satellite terminal
- satellite time service
- satellite-to-satellite tracking
- satellite town
- satellite town in China
- satellite tracking
- satellite tracking camera
- satellite trail
- satellite transit
- satellite transponder