china digital data network 中文意思是什麼
china digital data network
解釋
中國公用數字數據骨幹網-
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。 -
According to the present situation of the study for new technology for highway survey and design in china, this paper presents the common use of digital interface which is formed by the engineering data base technology, data base engine and intranet network technology. through this interface, the information collected by the single technology and the middle results and final achievements produced by these single technologies will be provided for the other technologies for share and reference. the data and models required for the process of using each single technology will be quickly provided to form an integrated technology for highway planning, survey and design
本文結合我國公路勘察設計新技術研究的現狀,以工程數據庫技術和網路技術構建通用的數據介面,將各單項技術所採集到的信息以及這些單項技術所產生的中間結果、最終成果提供給其它技術所共享和引用,快速提供各單項技術應用過程中所需要的數據和各類模型,從二維設計提升為三維設計,由靜態經驗設計提升為動態優化設計,形成從公路規劃、勘察、設計的一體化技術,最終實現公路虛擬景觀實時漫遊,達到設計快速方便、方案比選有效可靠、設計效果審查直觀的目的。
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