substitution group 中文意思是什麼

substitution group 解釋
代換群
  • substitution : n. 1. 代，代用，代替，更替，置換。2. 【化學】取代；【數學】代換；代入；【法律】預定繼承人；【語法】詞的代用。adj. -al ,-ary adj.
  • group : n 1 群；批，簇。2 集團，團體，小組。3 【化學】基，團，組；（周期表的）屬，族。4 （雕塑等的）群像...
  1. Like the amino group, the phenolic group powerfully activates aromatic rings toward electrophilie substitution, and in essentially the same way.

    對于親電取代反應，酚基基本上以同氨基一樣的方式使芳環強烈活化。
  2. The pocket accommodating the aromatic ring of phenylalanine is formed predominantly by hydrophobic side - chains, including those of ile10, ile13, prol50, leul75, leul79, phe209, ser211 and val221 ; whilst the amino group and carboxylate group of phenylalanine is coordinated by asp6, asp7, gln151 and ser180. the n - terminal region is found to be important to the function of arog. point mutation reveals that residue substitution of ilelo to ala10 leads to desensitization in the presence of 1 mm phenylalanine, simultaneously, exhibits a dramatic decrease in enzymatic activity

    綜合前人的研究和本研究工作的實驗數據，得出以下結論： 1 ）在arog的反饋抑制位點供苯丙氨酸結合的疏水口袋由asp6 、 asp7 、 ile10 、 ile13 、 pro150 、 gln151 、 leu175 、 leu179 、 ser180 、 phe209 、 ser211和val221等12個氨基酸殘基構成； 2 ）苯丙氨酸結合的疏水口袋分為兩個區域，與苯丙氨酸的苯環發生疏水作用的區域由ile10 、 ile13 、 pro150 、 leu175 、 leu179 、 phe209和val221的側鏈構成，而asp6 、 asp7 、 gln151和ser180的側鏈構成了與苯丙氨酸的氨基和羧基相互作用的區域。
  3. To summarize the historical experiences and lessons that led to the success or failure of the world petroleum resource cities, we can gain the following enlightenment : to play the macro - control role of city government fully ; to establish the oil gas resource industrial group with reasonable structure through using the oil gas resource advantages fully ; to go to the development road of " to develop oil gas resource to develop petroleum chemical industry to establish diversified economy to form substitution industry to walk to lasting prosperity "

    總結世界石油資源城市興衰成敗的歷史經驗與教訓可從中得到以下啟示：即充分發揮城市政府的宏觀調控作用；充分利用油氣資源優勢，建立結構合理的油氣資源產業群；走「開發油氣資源發展石油化工建立多元經濟形成替代產業走向持久繁榮」的發展道路。
  4. Regular substitution group

    正則代換群
  5. Emphasis is on substitution and elimination reactions and chemistry of the carbonyl group

    重點強調取代、消除反應和含羰基基團的化學性質。
  6. Its essential idea is : 、 from g1, g2, …, gk choose a group g 1 ， it can be satisfied that g 1 can distinguish each sample to a greatest extend, i. e., using the existing discriminate methods ( choosing index and not - choosing index ) to judge each sample whether in g 1 or not in g 1 so as to maximize the correct rates of back substitution

    其基本思想是： 、從g1 ， g2 ， … ， gk中尋找一個總體設為g 1 ，使得g 1能最大程度的區分各個樣品，即應用已有的判別方法（挑選因子的和不挑選因子的）使得判斷各樣品要麼屬于g 1 ，要麼不屬于g 1的正確率達到最大。
  7. Adding members to an existing substitution group

    將成員添加到現有替換組
  8. Sql server does not support adding members to an existing substitution group in an xml schema collection

    Sql server不支持將成員添加到xml架構集合中的現有替換組。
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