碼組啟動信號 的英文怎麼說
中文拼音 [mǎzǔqǐdòngxìnháo]
碼組啟動信號
英文
start of block signal-
Firstly, the discrete multi - tone processing in an adsl central office - side interface card is detailedly introduced. the processing mainly includes timing, framing, interleaving, forward error correction, cyclic redundancy check, constellation encoding, inverse fast fourier transform processing, prefixing, d / a converting, and amplifying. secondly, a kind of interface named utopia level 2 is used as the network interface, with which many adsl devices are linked with one atm layer
本文比較詳細地闡述了數字用戶線接入模塊（ dslam ）開發方案中， adsl局端介面模塊的dmt編碼與調制過程，討論了其組網應用方式以及基於atm的網路側介面utopia2技術，分析了adsl與其它寬帶接入技術的相互聯系和優缺點，並介紹了方案中所採用的一些關鍵技術，包括在線插拔技術、系統同步啟動和故障自動重起技術以及高速數字信號完整性的保證技術等等。Over 13 kb saci restriction fragment was cloned into pgem - 7zf ( + ), mapped for restriction endonuclease sites and an about 5. 0kb fragment was further subcloned and sequenced. through coding region specific primer, we amplied it ' s corresponding cdna, named st901. st901 is 2889bp long, contains 1447bp putative promoter region within 5 " upstream and three exons ( 475bp, 140bp, 39bp ) and two introns ( 472bp, 2s3bp ) in the coding region, encodes a hydrophilic protein of 217 amino acid residues with a molecular mass of 24kda
以同源探針篩選馬鈴薯基因組文庫，得到四倍體馬鈴薯基因組dna ? st901 ，基因全長2889bp ，含3個外顯子（長度分別為475bp ， 140bp ， 39bp ）和2個內含子（長度分別為472bp ， 253bp ） ； 5 』端含有1447bp的啟動子區段，該區段具備一般啟動子的基本元件tatabox和caatbox ； 3 』非編碼區長63bp ，具hind酶切位點，沒有發現保守的加尾信號。
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