SDH

基本解释

SDH has been greatly developed and used as a new transmission technology in the world.
SDH作为新的一代传输技术，已得到了各国的大力开发和应用。
Virtual containers encapsulation rate and SDH network synchronization, the synchronization is different VC.
虚容器的包封速率与SDH网络同步，即不同VC是同步的。
The current status of telecommunication network and the advantage of SDH application are described and the problems in SDH network and imported equipments are analysed.
介绍了上海电网通讯传输网现状和应用SDH的优点，提出并分析了用SDH组网和引进设备中应考虑的问题。

The WAITING FOR "SUPERMAN" Blu-ray is presented in 1080p high definition with Spanish 5.1 Dolby Digital and English, English SDH, French, Spanish and Brazilian Portuguese subtitles.
ENGADGET: Waiting for Superman Blu-ray dated February 15th with HD special features & donation credit
The Indian government announced in December that it would impose tariffs of 50% on Huawei's synchronous digital hierarchy (SDH) transmission equipment while its cross-town rival, China's ZTE Corp.
FORBES: Huawei Doubles Down In Bangalore
The disc additionally features French 5.1 Dolby Digital, Spanish 5.1 Dolby Digital, Portuguese 5.1 Dolby Digital and English Audio Description with English, English SDH, French, Spanish and Portuguese subtitles.
ENGADGET: Transformers: Dark of the Moon Blu-ray due September 30th, 3D version later