中文字幕精品视频在线|中文字幕在线观看|亚洲v日本v欧美v在线播放|伊人网中文字幕

<nav id="3u6n6"></nav><samp id="3u6n6"><tr id="3u6n6"><track id="3u6n6"></track></tr></samp>
    <legend id="3u6n6"><fieldset id="3u6n6"></fieldset></legend>

      
      

    1. 首頁英語詞典RNARNA英英釋意

      RNA

      [,a:r en 'ei]
      • abbr. 核糖核酸(Ribonucleic Acid);浪漫派小說家協(xié)會(Romantic Novelists ' Association)

      英英釋意


      1. (biochemistry) a long linear polymer of nucleotides found in the nucleus but mainly in the cytoplasm of a cell where it is associated with microsomes; it transmits genetic information from DNA to the cytoplasm and controls certain chemical processes in
      "ribonucleic acid is the genetic material of some viruses"