工学 【复用概念】 释 synchronous digital hierarchy，SDH 同步数字体系 基于同步复用技术的数字复用体系。
网络与数据通信 协议体系与组成结构 释文 synchronous digital hierarchy, SDH 同步数字体系
- perceptual control
- perceptual control theory
- perceptual data fusion
- perceptual data storage
- perceptual development
- perceptual effect
- perceptual hypothesis
- perceptual information processing subsystem
- perceptual interference effect
- perceptual learning
- perceptual mapping
- perceptual organization
- Perceptual Phonetics
- perch culture
- perched water
- perchlorate
- perchloric acid
- perchloroethane
- perchloromethane
- Per Christian Jersild
- percipience
- Percival
- Percival James Patterson
- Percival Lowell
- percolate