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
- retrograde amnesia
- retrograde condensate phenomenon
- retrograde degeneration
- retrograde ejaculation
- retrograde grouting
- retrograde merger
- retrograde messenger
- retrograde metamorphism
- retrograde motion
- retrograde motion, retrogression
- retrograde of inversion
- retrograde orbit
- retrograde precession
- retrograde stationary
- retrograde treatment
- retrogression
- retrogressive development
- retrogressive erosion
- retrogressive metamorphosis
- retrogressive succession
- retrogressive wave
- retroject
- retropack
- retroperitoneal fibrosis
- retroperitoneal hematoma