1.
Frame structure for synchronous digital hierarchy signal
GB/T15409-1994同步数字体系信号的帧结构
2.
Synchronous digital hierarchy bit rates
GB/T14731-1993同步数字体系的比特率
3.
Methods of measurement for synchronous digital hierarchy(SDH)optical fiber cable line systems
GB/T16814-1997同步数字体系（SDH）光缆线路系统测试方法
4.
Requirements for synchronous digital hierarchy (SDH) optical fiber cable line systems of national public telecommunication network
GB/T15941-1995同步数字体系(SDH)光缆线路系统进网要求
5.
Basic multiplexing structure for synchronous digital hierarchy signals
GB/T15940-1995同步数字体系信号的基本复用结构
6.
Specifications for synchronous digital hierarchy (SDH) multiplex equipment
GB/T16712-1996同步数字体系（SDH）复用设备技术要求
7.
SDH and DXC Standards Passed MPT Appraisal
《同步数字体系》等两项标准通过邮电部技术鉴定
8.
Study on the High Integration Access Method for SDH Backbone Network
同步数字体系骨干网的高集成度接入方法研究
9.
A Comparative Study of PDH、SDH and SONET Technologies
准同步数字系列、同步数字系列、同步光纤网的技术比较及互通
10.
Implementation method of a core SONET/SDH switch with high capacity
同步光网络和同步数字系列大容量交叉的实现
11.
Study of a New-Type Digital Synchronous Valve and Its Application to Synchronous System;
新型数字同步阀及其在同步系统中的应用研究
12.
A Study on Fiber Access and Transport System Based on Synchronous Digital Hierarchy;
同步数字体制光纤接入传输系统若干关键技术的研究
13.
The Research on Digital Control System of Permanent Magnet Synchronization Motor;
永磁同步电动机数字化控制系统研究
14.
Research on Digital Drive System of Permanent Magnet Synchronous Motor;
永磁同步电动机数字化驱动系统研究
15.
A Brief Discussion on the Net Synchronization of Radio & Television Digital Communication System
浅谈广播电视数字通信系统的网同步
16.
Realization of Digital Permanent Magnet Synchronous Motor Control System
永磁同步电机控制系统全数字化实现
17.
Study of Control Strategies of Position Synchronous System Using New-Type Digital Synchronous Valve;
基于新型数字同步阀位置同步系统控制策略的研究
18.
digital-selsyn converter
数字自同步机转换器