類化前 的英文怎麼說

中文拼音 [lèihuàqián]
類化前 英文
precategorize
  • 類 : Ⅰ名1 （許多相似或相同的事物的綜合; 種類） class; category; kind; type 2 （姓氏） a surname Ⅱ動詞...
  • 前 : Ⅰ名詞1 （在正面的） front 2 （次序在先的） first; top 3 （過去的; 較早的） ago; before; preceding...
  • 類化 : apperception
  1. The discovery of the colossal magnetoresistance ( cmr ) in hole - doped perovskite manganites ra1 - xmxmno3 ( ra is a trivalent rare - earth ion and m is a metal ion ) has attracted much attention since 1989 due to not only its technological applications in magnetic recording and sensor, but also the effect of the strong correlation concerning metal - insulator transition in the field of basic research. since then, several physics models have been suggested to explain the mechanism of cmr. however, the exact mechanism of cmr remains to be done

    自1989年在摻雜鈣鈦礦型錳氧化物ra _ （ 1 - x ） m _ xmno _ 3 （其中m為金屬離子， ra為三價稀土離子）中發現龐磁電阻（ cmr ）以來由於其在磁記錄、磁傳感器等方面潛在的應用前景，以及金屬?絕緣體相變等所涉及的強關聯效應，使該類化合物吸引了物理學界的廣泛注意。
  2. The development of the synthesis aroma chemicals with sandalwood odour note from camphorenal in the world was reviewed, then a detailed introduction of structures and aroma characters of these chemical was also given, and the prospect for the synthesis of them from camphorenal was mentioned finally

    摘要本文綜述了國內外以龍腦烯醛合成一系列檀香類化合物的研究情況，對這些合成產物結構及其香氣特徵進行了詳細介紹，並對其發展前景給予展望。
  3. Two years later, in the himalayan foothills of northern pakistan, gingerich ' s team found another weird whale clue : a partial braincase from a wolf - size creature ? found in the company of 50 - million - year - old land mammal remains ? that bore some distinctive cetacean characteristics

    兩年後，在巴基斯坦北部的喜馬拉雅山丘陵地帶，金格瑞西的團隊找到另一個古怪的鯨豚線索：一個不完整的腦顱，似乎是個體型像狼的動物，可是帶有一些鯨豚類獨有的特徵；與它同時出土的都是5000萬年前的陸棲哺乳類化石。
  4. But in contrast of the research of chemical weathering of other rocks, such as granites and basalts, the research of chemical weathering of black shales both in width and depth still remains much to advance. after reading and investigating widely, we selected lower - cambrian black shales and their weathering profiles in hunan province as research objects of our work at first. then, based on field investigation of weathering status of lower - cambrian black shales and it ' s relationship with soil composition and human activities in hunan, we studied changes of chemical composition such as major and trace elements before and after weathering of black shales by comparison

    根據文獻閱讀和野外調查，本文選擇了湖南安化、桃江、望城等地下寒武統黑色頁巖及有關風化剖面作為研究對象，並在查明湖南下寒武統黑色頁巖的風化現狀及其與土壤組成、人類活動的關系的基礎上，對比研究了黑色頁巖風化前後主量和微量元素等化學組成的變化，探討了元素的富集和遷移轉化機制以及黑色頁巖風化與區域環境質量的關系，得出了如下幾點主要成果和認識： （ 1 ） ti是黑色頁巖風化過程中的「不活動」元素，可作為參照元素，對其它元素的活動性進行質量平衡計算。
  5. But the previous research works mainly focused on the screening of environment persistent pollutants, such as organochlorine insecticides and alkylphenol, to our knowledge, no report on the residual toxicity and environmental estrogens effects has been existed in the literature yet

    但目前為止，主要集中於環境中持久性有機污染物如有機氯農藥和烷基酚類化合物的篩選上，而我國是農業大國，大量地使用了有機磷農藥，其殘留毒性及環境雌激素效應的研究還尚未見報道。
  6. It will likely be a few years before the compound is ready for use in human trials, according to frangioni

    正如幾年前此類化合物迅速的應用在人類測試上一樣。
  7. 3. the process of education is just a process of the generation of the students " personal knowledge, which includes two closely combined aspects : the implicitization of explicit knowledge and the explicitization of implicit knowledge, hi the former aspect, students use other people ' s achievement and change it into personal capability and quality ; in the latter aspect, students accumulate experience in everyday practice and change into explicit knowledge with the help of language system

    教育過程其實質也即學生個人知識生成的過程，包括兩個密切關聯的方面：顯性知識的緘默化和緘默知識的顯性化。前者指學生通過學習人類的認識成果，並在實踐活動中加以運用而轉化為個人的技能、技巧，內化為自身的素質；後者指學生在自己日常實踐活動中積累經驗，產生緘默知識，藉助于語言符號系統而使其顯性化。
  8. The asymmetry reduction of ketones has become frontier field of organic synthesis chemistry, and it ' s also the fast developing and more successful field in recent years

    近年來，由酮類化合物不對稱還原為醇類化合物成為有機合成化學的前沿領域，發展迅速，並取得了許多成就。
  9. And we may modulate nickel one - nuclear complexes " optical and thermal properties by designing molecule structures so as to make it a promising organic material

    並且鎳單核類化合物可以通過設計分子的結構來調節介質的光學和熱學性質，是一類具有良好應用前景的有機材料。
  10. Whoever excavates and robs fossils of paleoanthropoids or paleovertebrates of scientific value which is under state protection shall be punished in accordance with the provisions of the preceding paragraph

    盜掘國家保護的具有科學價值的古人類化石和古脊椎動物化石的，依照前款的規定處罰。
  11. The research is being dedicated to developing for that new cephalosporin drugs with high antibacterial activities against gram - positive ( g ( superscript + ) ), especially against methicillin - resistant staphylococcus aureus ( mrsa ), and prodrugs with improving pharmaceutical properties

    目前頭孢菌素類藥物的研究熱點在於尋找對耐藥的革蘭氏陽性致病菌敏感，尤其是對耐甲氧西林金葡萄球菌（ mrsa ）敏感的頭孢烯酸類化合物及對高活性化合物進行結構修飾，改善其藥學性質。
  12. Then the prospect of oxazolidines and their modified products using in leather - making especially chrome - free tanning were discussed according to the introduction of the characteristics and utilizing status of oxazolidines nowadays

    介紹了惡唑烷類化合物的性質及應用現狀；討論了惡唑烷類化合物及其改性產物用於製革尤其是無鉻鞣的前景。
  13. Tert - butyl hydrazine ( tbh ) is a kind of hydrazine derivatives. the preliminary research results show that tbh can effectively reduce np ( vi ) to np ( v ). what ' s more, among all hydrazine derivatives ever reported in literature, the ratio of the reaction rate constants of np ( vi ) reduction by tbh to that of pu ( iv ) reduction by tbh is the most largest, thus it has been considered as one of promising selective reductants

    研究結果表明，該類化合物是具有一定應用前景的還原劑。特丁基肼（ tbh ）屬于肼類衍生物。初步研究表明，特丁基肼不僅能有效還原np （ ）到np （ ） ，而且在所有報道過的肼類衍生物中，還原np （ ） 、 pu （ ）的速率差別最大，被認為是最有前途的選擇性還原劑之一。
  14. We detected the transcription and translation change of different thrs genes by semiquantitative reverse transcription - polymerse chain reaction ( rt - pcr ) analysisjelisa respectively. at same time the differentiated cell were identified by immunocytochemistry method. results ( l ) nsc induced by mitogens were nestin - positive and incorporated by brdu

    以pdgf 、 t _ 3對nsc進行誘導分化，並分別用rt - pcr半定量法、 elisa法檢測nsc在不同誘導因子作用下分化前後thr各亞型在轉錄與翻譯水平上的表達變化，用免疫細胞化學方法鑒定分化后的細胞類型。
  15. Recent advances on the study of porphyrins in the application of antitumor drug and anticancer action mechanism are reviewed, and the possible development in the future is predicated

    摘要綜述了卟啉類化合物作為抗癌藥物的應用及其抗癌作用機理的研究進展，並對其研究的前景進行了展望。
  16. The appellation of transformed crime was first created by chinese scholars, it studies the transformation of different crimes in criminal law. in china, transformed crime is one theory that must be studied further. this theory has profound significance for legislation and judicial affairs of criminal law, and has unique value

    本文對轉化犯的概念、構成特徵、分類以及轉化犯的轉化前提問題等一系列理論上尚存在爭議的重大問題進行了較為深入的研究，同時對轉化犯的認定中存在的若干疑難問題進行了分析，提出了解決的辦法。
  17. Abstract : summerizing the extracting and isolating methods of flavonoids, this thesis introduces the analysis and measurement of flavonoids, lists the flavonoids ingredients and biological activities of nine tree leaves and illustrates the medical effects and the applied prospects in the antioxidant

    文摘:綜述了黃酮類化合物的提取與分離的方法，從定量分析和定性分析兩方面介紹了黃酮類化合物的分析測定，列出了9種樹葉中的黃酮成分及其生理活性，闡明了黃酮類化合物的藥效及其在抗氧化劑方面的應用前景
  18. In addition, a kind of perylene derivative with pyridine group was synthesized, which made preparation for self - assemble of perylene mutilayers on silicon

    文論文還合成了帶有吡啶官能團的?類化合物，為?在硅基上自組裝成膜做了前期的研究。
  19. The caves of the sierra de atapuerca contain a rich fossil record of the earliest human beings in europe, from nearly one million years ago and extending up to the common era

    阿塔皮爾卡山洞穴中發現了大量早期人類化石，經考證是歐洲最早的人類化石，可以追溯到100萬年以前至公元紀年這段時期。
  20. It means that in order to catapult the species of humans forward into a higher consciousness, there is a maximum and minimum mutation that needs to take place to create a new standard of operation

    它意味著為了推動這個人類族類往前進入一個更高的意識，有一個極大和極小的需要建立一個新運轉標準的變化。
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