1) SDH communication network
SDH通信网络
1.
After presenting the organizing scheme and testing results of the time synchronization experimental system of the power grid based on SDH communication network,several factors which can affect time synchronization are discussed in detail and proposals are given regarding the principles and methods of channel selection,configuration and operation when time is transmitted time through SDH network.
从分析SDH通道传递时间的机理、过程和时延特性研究入手,结合基于SDH通信网络的电网时间统一试验系统的组织方案和测试结果,分析了各种通道因素对时间同步的影响,提出了通过SDH通信网络传递时间时通道选择、配置和运行的原则与方法。
2) SDH fibe-optics communication network
SDH光纤通信网络
3) interworking of SDH network
SDH网络互通
4) SDH fiber communication network
SDH光纤通信网
5) SDH network
SDH网络
1.
Research on SDH network optimization in power telecommunication network;
电力通信网SDH网络优化研究
2.
SDH network can provide multi_service provisioning platform for data network.
在描述了SDH网络技术后 ,说明SDH网络可以为数据网提供多业务平台的支持 ;阐明了最新一代多业务数据传输平台MSTP解决方案是光网络层与IP层之间的完美结合与补充 ;指出了作为新一代的宽带多业务传输平台 ,思科的ONS15 45 4SDHMSTP为数据网络应用提供了更远的光传输距离、更高的应用多样性和更加灵活的服务。
3.
The protector structure of light path is introduced, and a new scheme of the protector in SDH network of Zhejiang broadcasting is proposed.
介绍了光路保护器结构,提出了将其用于浙江广电SDH网络的方案,并介绍了设备选型和相关内容软件。
6) small SDH optical fiber communications ring networks
小型SDH光纤通信网
1.
By the way of analyzing the general synchronization way and protection way of SDH networks, make an inquiry into the synchronization way and protection way that the small SDH optical fiber communications ring networks ought to select.
通过对常见的SDH网同步方式和保护方式的分析 ,介绍了小型SDH光纤通信网应选择的同步方式和保护方式。
补充资料:SD
分子式C10H10N4O2S,分子量250.28。俗称SD。又称对氨基-N-2-嘧啶基苯磺酸胺。白色或微黄色结晶粉末。无臭。熔点252~256℃。在空气中稳定,光照时易变成深色,难溶于水,微溶于乙醇、丙酮和乙醚。易溶于稀无机酸和苛性碱溶液。能治疗肺炎球菌、溶血性链球菌、脑膜炎球菌等的感染。适宜于小儿用药。也常制成水溶性的钠盐,用作注射针剂。可由对乙酰氨基苯磺酰氯与2-氨基嘧啶反应,然后再经水解制得。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条