synchronous digital hierarchy 中文意思是什麼

synchronous digital hierarchy 解釋
同步數位階層
  • synchronous : adj. 同時的，同期的；【物理學】同步的。adv. -ly
  • digital : adj. 1. 手指的；指狀的。2. 數字的，數據的。n. 1. （鋼琴等的）琴鍵。2. 手指。
  • hierarchy : n. 1. 僧侶統治集團，僧侶統治。2. 統治集團。3. 等級制度。4. 【宗教】天使團，天使的級別。5. 【動、植】（綱、目、科、屬等的）分類等級。6. 【計算機】分層，層次。
  1. Transmission and multiplexing. optical interfaces for equipment and systems relating to the synchronous digital hierarchy uit - t recommandation g. 957 modified

    傳輸和多路通信.同步數字體系設備和系統用光學介面
  2. Transmission and multiplexing - generic requirements of transport functionality of equipment - part 4 - 1 : synchronous digital hierarchy path layer functions endorsement of the english version en 300417 - 4 - 1 v 1. 1. 3 1999 - 05 as german stand

    本標準規定對共電自動電話機技術條件gb 1493 - 79和磁石電話機技術條件gb 1494 - 79進行試驗所應遵循的試驗方法。
  3. By adopting qam ( quadrature amplitude modulation ) modulation, we have researched and implemented a high - speed data broadcasting system compatible with dvb ( digital video broadcasting ) standard in the past years, and integrated and applicated the system into sdh / hfc ( synchronous digital hierarchy / hybrid fiber coax ) network for the first time in china

    經過多年的研究，開發出了符合dvb標準、採用qam調制方式的陽光網高速數據廣播系統，同時在國內首次實現了基於sdh hfc網路的高速數據廣播系統集成應用。
  4. Frame structure for synchronous digital hierarchy signal

    同步數字體系信號的幀結構
  5. Synchronous digital hierarchy bit rates

    同步數字體系的比特率
  6. Basic multiplexing structure for synchronous digital hierarchy signals

    同步數字體系信號的基本復用結構
  7. Specifications for synchronous digital hierarchy multiplex equipment

    同步數字體系sdh復用設備技術要求
  8. Synchronous digital hierarchy

    同步數字體系
  9. Methods of measurement for synchronous digital hierarchy optical fiber cable line systems

    同步數字體系sdh光纜線路系統測試方法
  10. Pdh pseudo synchronous digital hierarchy

    準同步數字序列
  11. Synchronous digital hierarchy cross - connect sdxc

    同步數字系列交叉
  12. Pdh pseudo - synchronous digital hierarchy

    準同步數字系列
  13. Pe pseudo - synchronous digital hierarchy

    準同步數字系列
  14. Synchronous digital hierarchy, sdh

    同步數位階層
  15. Sdh synchronous digital hierarchy

    同步數字系列
  16. Synchronous digital hierarchy sdh

    同步數字系列
  17. The sdh ( synchronous digital hierarchy ) is originally developed from the pdh ( plesiochronous digital hierarchy )

    它是目前光纖通信系統中應用最廣泛的數字傳輸體制。
  18. Sdh ( synchronous digital hierarchy ) has some primary advantages such as synchronous multiplexing, standard optical interface and strong network management compared with pdh ( plesiochronous digital hierarchy )

    同步數字體制（ sdh ）與傳統的偽同步數字體制（ pdh ）相比，有三大核心優勢，即同步復用、標準光介面和強大的網管能力。
  19. Initially, pdh was introduced to improve and replace the obsolete analog frequency division multiplex ( fdm ) system. however, it was soon found that pdh had shortcomings such as difficulty in management, high construction cost, limited applications and lack of connectivity standards at the optical layer. thus, in the early 1990s, synchronous digital hierarchy ( sdh ) was introduced in the transmission system

    Pdh最初引入是為了改進和替代老式的模擬頻分復用器系統，但很快被發現pdh管理困難、造價高、應用范圍窄，且缺乏在光層面上的連接標準，因此90年代初期， sdh （ synchronousdigitalhierarchy ）標準被首先引入了傳輸系統。
  20. How to transmit high volume data effectively and economically on current sdh ( synchronous digital hierarchy ) transmission network is an important research area in transmission technology. this paper first introduces the background of eos

    如何利用現有的sdh （ synchronousdigitalhierarchy ）網路高效而經濟地傳輸數據業務，目前正成為傳輸技術中重要的研究課題。
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