telegraph network 中文意思是什麼
telegraph network
解釋
電報通信網路-
After 19th century, the technology such as photograph, films, telegraph, telephone, broadcast, television came out early or late. since middle period of 20th century, the technology of computer, network and telecommunication which based on micro - electronics & telesthesia promote the development of modern information technology, and bring the important reform in education
人類進入十九世紀以後，攝影技術、電影技術、電報、電話、廣播、電視等技術先後相繼問世，二十世紀中葉以來，以微電子技術與傳感技術為基礎的計算機、網路及通訊技術推動了現代信息技術的發展，升由此引起了教育領域的重要變革。 -
Telegraph equations, can be looked as cascade connection of two - port network of lumped circuit of transmission line, is a hyperbolic partial differential equations
傳輸線可以看作集中參數二埠網路的級聯，其數學模型?電報方程是一階雙曲型偏微分方程組。 -
Every field has its own special computer network, however they still use the switching network of programming control which is provided by the post telephone and telegraph system. the cost of the telephone is a large part in the spending of every department. instructing the switching network to realize the telephone communication needs much of equipment charges, lines charges, protection charges, project charges and time
雖然各行業都有自己的專用計算機網路，但是各行業仍利用郵電系統提供的程式控制交換電話網路通信，需支付大量的電話費，佔用了各部門的很大一部分開銷；建立程式控制交換電話網路實現電話通信需要大量的設備費、線路費、維護費和工程費等費用，並且需要一定的施工工期。
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