primary degradation 中文意思是什麼

primary degradation 解釋
初級降解
  • primary : adj 1 第一的，最初的，初級的；初等的；基本的；基層的。2 主要的，為首的，第一位的。3 原始的，根本...
  • degradation : n. 1. 降級；免職。2. 退化；墮落。3. 【地質學；地理學】（地表的）剝蝕。4. 【化學】降解，遞降分解（作用）。5. 【物理學】（能的）退降。
  1. But polyadenylation in bacteria needs no specific consensus sequence or there is no such sequence signals found. the sites of polyadenylation of bacterial mrna are diverse, including the 3 ' ends of primary transcripts, the sites of endonucleolytic processing in the 3 ' untranslatd and intercistronic regions, and sites within the coding regions of mrna degradation products

    細菌mrna多聚腺苷酸化的位點多種多樣，包括初級轉錄產物的3 』末端， 3 』端非翻譯區和順反子間區的內切酶加工位點及mrna降解產物的編碼區內，其腺苷酸化相對無特異性、無選擇性。
  2. ( 2 ) in aspects of land use landscape, woodland has the maximum fragmentation value in wuxi county. the fragmentation values of others except habitation, barren land, paddy field are all higher than 1. 7, which means those landscape are disturbed fiercely by humans and are the primary parts of ecological degradation landscape

    （ 2 ）巫溪縣破碎度最大的為灌木林地，除居民點、裸巖石礫地、平原區水田與其它林地外，其餘的破碎指數均高於1 . 7 ，表明這部分景觀受人類干擾強烈，是主要的生態退化景觀類型。
  3. Restoration ecology is ranked as one of three hotpots in biological realm as well as biological diversity and global climate change in recent years, which is one fresh branch of modem ecology. its primary research includes : the cause of degradation in ecosystem, techniques and methods of degraded ecosystem restoration and reconstruction, process and mechanism of ecology, research objectives of which are the destroyed ecosystems under the stress of natural catastrophes and human activities

    恢復生態學與生物多樣性和全球氣候變化並列為生物領域的三大研究熱點，它主要研究生態系統退化的原因、退化生態系統恢復和重建的技術與方法、生態學過程與機理的科學，是現代生態學的年輕分支之一，其研究對象是一些在自然災變和人類活動壓力下受到破壞的生態系統。
  4. The primary and secondary mirrors of the schwarzschild optics were fabricated in our institute and measured using zygo mark iv interferometer. figure errors were observed in both primary and secondary mirror of 5nm ( rms ). these magnitudes are very small at visible wavelength but sufficient to cause significant degradation in the wave - front quality of the schwarzschild optics in extreme ultraviolet ( euv ) wavelength

    利用zygomark干涉儀檢測的schwarzschild微縮投影物鏡主、次鏡面形精度表明，對可見光工作波段已具有足夠高的面形精度，均為5nm （ rms ） ，但在euv （ extremeultraviolet ）波段，將給schwarzschild微縮投影物鏡帶來嚴重的波面誤差。
  5. These results indicated that chemical treatments may cleavage the linkages between lignin and polysaccharides, and between monomers of lignin, which results in the decrease of compositions of lignin in primary and secondary wall of rice straw, and hence increases the degradation rate of secondary wall and degree of primary wall degradation observed under histological investigation

    上述結果表明，化學預處理通過破壞木質素與結構性多糖、木質素單體之間的連接，導致細胞壁各層的木質素組分不同程度的下降是化學預處理后稻草亞細胞結構變化的化學基礎所在。
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