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
- acoustic source
- acoustic source localization
- acoustic source, sound source
- acoustics property of ceramics
- acoustic stealth composite material
- acoustic stealth material
- acoustics, theory of sound
- acoustic stiffness
- acoustic susceptance
- acoustics wave gauge
- acoustic televiewer
- acoustic test
- acoustic thermometer
- acoustic time reversal mirror
- acoustic time-reversal mirror
- acoustic tomography
- acoustic transfer function
- acoustic transfer function measurement
- acoustic transformation media
- acoustic transit time flowmeter discharge measurement
- acoustic transmittance
- acoustic treatment aid
- acoustic tweezer
- acoustic tweezers
- acoustic variable density log