digital transmission line 中文意思是什麼

digital transmission line 解釋
數字傳輸線
  • 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。
  • transmission : n 遞送；傳遞；傳達；傳染；移轉；【機械工程】傳動；傳遞；變速器；聯動機件；【無線電】傳送；發射；...
  • line : n 1 線；繩索；釣絲；測深度用繩，捲尺。 a fishing line 釣魚線。 be clever with rod and line 會釣魚...
  1. With the increasing of digital cable transmission frequency, srl ( structural return loss ) on - line evaluation using diameter data of digital cable core became a method of cable quality control. higher measuring precision and higher measuring speed of the diameter gauge was required

    此外，由於數字通信電纜傳輸頻帶的提高，對均勻性要求也不斷提高，採用直徑信息來在線評估數字通信電纜的srl （結構回波損耗）成為也質量控制一種方法，這就對測徑儀的測試性能提出了更高的要求。
  2. Hands - free speech communication is indispensable in audio and video conference systems, hot - line telephones and videophones, mobile radio terminals, digital isdn network etc. however, the control ( cancellation ) of the acoustic echo has always had a strong impact on the transmission quality in hands - free telecommunication ~ [ 1 - 3 ] conventional methods of acoustic echo control ( cancellation ), such as echo suppression or gain control, may lead to the degradations in speech quality or make the speakers feel uncomfortable

    免提式話音通信在移動電話、熱線電話、車載電話及isdn網的電視電話會議等多種領域正得到日益廣泛的應用。但至今的免提式話音通信中，仍免不了受回聲引起的話音失真、甚至嘯叫等干擾，大大降低了免提話音通信的質量。由於聲回波對消問題尚未得到圓滿解決，實現高質量的免提式話音通信仍是一個極賦挑戰性的課題。
  3. Tdd - edsl : access network technical specification ? tdd based ethernet digital subscriber line system tdd - edsl : variable length frame transmission mode

    接入網技術要求?基於時分雙工的以太數字用戶線系統
  4. Telecommunications - digital processing of voice - band signals - line format for 32 - kbit s adaptive differential pulse - code modulation channel - control templates and robbed - bit signaling alarm transmission

    電信.音頻信號的數字處理. 32 - kbit s自適應差動脈沖代碼調制adpcm用線路格式
  5. ; ansi t1. 302a - 92 telecommunications - digital processing of voice - band signals - line format for 32 - kbit s adaptive differential pulse - code modulation channel - control templates and robbed - bit signaling alarm transmission ; supplement t. 302a - 1992

    電信.音頻信號的數字處理. 32k位秒自適應差動脈沖代碼調制的行格式
  6. Asymmetrical digital subscriber loop ( adsl ) is a prevalence fashion of broadband solutions today. it uses the installed base of copper telephone line as the transmission medium. with the combined use of sophisticated signal modulate methods and the high speed digital signal process technology, it ' s upstream speed can be 100kbps to 800kbps and the downstream delivers from 1mbps to 8mbps

    不對稱數字用戶線（ adsl ， asymmetricaldigitalsubscriberloop ）是目前比較流行的寬帶接入方式，它使用現有的銅質電話線作為傳輸介質，採用先進的信號調制方式和高速的數字信號處理技術相結合，上行速度為100kbps 800kbps ，下行速度為1mbps 8mbps 。
  7. Transmission line design is a complex system project with large investment. based on data provided by digital transmission network, and combined with the genetic algorithm, the thesis puts forward a general optimization method to deal with the difficulties in transmission line design, which are path and pole selection of the transmission line. synthetically contemplating all kinds of environmental and anthropogenic factors, the method has great pragmatic meaning in saving cost of design

    輸電線路設計是一項投資巨大且相關因素復雜的系統工程，本文基於「數字輸電網路」提供的信息數據，結合遺傳演算法，對線路設計中的難點? ?路徑選擇和桿塔定位提出了全新的全局優化方法，該方法綜合地考慮了各種環境及人為因素，對節約設計成本、提高設計工作的科學性具有很大的現實意義。
  8. Although adsl comes with new digital processing, coding, modulation and error correction technologies, it is also faced with various challenges out of subscriber lines, such as background noise, impulse noise, insertion loss, cross talk, wire size variations, bridge tap, line joints and line insulation, etc. all those factors tend to produce adverse impacts on the performance of high - speed transmission services. firstly, the insertion loss of copper lines increases in proportion to the length of lines

    雖然adsl採用先進的數字信號處理技術、編碼調制技術和糾錯技術，但是在推廣adsl業務時，用戶線路的許多特性，包括線路上的背景噪聲、脈沖噪聲、線路的插入損耗、線路間的串擾、線徑的變化、線路的橋接抽頭、線路接頭和線路絕緣等因素將影響高速率傳輸業務的性能。
  9. This scientific research project bases on this starting point, develops the spread spectrum digital transmission system which can accomplish the digital transmission on power line

    本科研項目便是基於這一出發點，開發能實現在電力線上傳輸數據的擴頻數字傳輸系統。
  10. The main transmission control adopts dc control, adopting england ssd digital no reversible dc speed regulate device, the siemens plc to control the whole line

    2主傳動控制採用直流電機，由全新的英國ssd全數字不可逆直流調速裝置，整機控制由西門子可編程式控制制器管理。
  11. In addition, adsl adopts the advanced digital signal processing technology to minimize the impact of line impairment on transmission performance

    另外， adsl採用了先進的數字信號處理技術來減少線路損傷對傳輸性能的影響。
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