To realize this , drawing roller speed program control of horizontal continuous casting machine based on frequency converter , the signal generator provides program signal to frequency converter 采用變頻器實現水平連鑄機拉坯輥速度程序控制,由信號發生裝置給變頻器提供程控信號。
Scrambler - a device that electronically alters a program signal so that it can be seen only by persons , typically paid subscribers , with appropriate decoding , or " descrambler " devices 擾頻器-此電子設備可以改變一個節目的信號,只有在正確的解碼或安裝正確的裝置時,才能被特定人群收看,特別是付費訂戶。
Study abroad channel services the whole nation via china sat 6b communication satellite , which transmits programming signals to 115 cities in 27 provinces throughout china , claiming 6 million set - top box users until july 2006 《留學世界》頻道通過中星6b國際通信衛星覆蓋全國,截止2006年7月,頻道覆蓋用戶已達600萬戶,涵蓋了27個省、自治區、直轄市的115個城市網絡。
With the development of digital satellite broadcasting and high speed digital signal processing technology , adopting satellite transport program signal has become a simple and feasible technology method to realize fm radio synchronous broadcasting and extend the covering of radio broadcast 摘要隨著數字廣播衛星和高速數字信號處理器技術的發展,采用衛星傳輸節目源信號已成為實現調頻同步廣播、擴大廣播電臺覆蓋范圍的一種簡捷、可行的技術方案。
Only few analog tv channels are there in country areas and what more the covering range of the analog transmitters is smaller than that of digital transmitters which though with the same power , which result in that the covering site of broadcasting signals is always the urban areas while people who live in the remote areas receive no tv program signals , and as the essential parts of utilities for our party and governments to expressing its administration conception , broadcasting in suburban areas by far cannot give the government the ability to give publicity to the people effectively 農村廣播電視的覆蓋工作,長期以來一直是我們廣播事業建設的薄弱環節。模擬電視節目套數很少,而且同等功率的模擬發射機覆蓋范圍也相對數字發射機的小,通常只是集中覆蓋主要城鎮和人口聚集地,偏遠地區的廣大群眾長期不能收看電視。廣播電視作為黨和政府喉舌的功能,沒有得以充分發揮。