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     Effects of Surface Modification with DBS Groups on Gas Phase Photocatalytic Performance of Nanosized TiO_ 2
     表面修饰DBS基团对TiO_2气相光催化性能的影响
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     Effect of Functional Groups on the Activity of Water-soluble β-Alanine C_(60)Derivatives for Superoxide Anion Radical Scavenging
     功能化基团对C_(60)-β-丙氨酸衍生物清除超氧阴离子自由基O_2~-·能力的影响
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     Influence of Si—OH groups on properties and avoidance for SiCOH films prepared by decamethylcyclopentasiloxane electron cyclotron resonance plasma
     Si—OH基团对SiCOH低k薄膜性能的影响与控制
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     This paper investigates the effect of Si—OH groups on dielectric property and leakage current of the SiCOH low dielectric constant films deposited by decamethylcyclopentasioxane (D5) electron cyclotron resonance plasma.
     研究了十甲基环五硅氧烷(D5)的电子回旋共振等离子体沉积的SiCOH薄膜中Si—OH基团对介电性能和漏电流的影响.
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     Protonic conducting P_2O_5-SiO_2 glasses were prepared by sol-gel processing. The heat history and microstructure of protonic conducting glasses were studied by DSC,XRD and FT-IR. The dependence of P_2O_5 content,temperature and OH groups on electrical conductivity were discussed.
     采用溶胶-凝胶法制备了P2O5-SiO2快质子导电玻璃,并借助DSC、XRD、FT-IR等测试手段分析了质子导电玻璃的热历史、微结构等,探讨了玻璃中磷含量、温度、OH基团对导电率的影响。
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     Analysis of the Impact of Ethnic Minority Groups on US Foreign Policy Decision-making
     试析少数族群对美国外交决策的影响
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     Effect of Bubble Groups on Propagation of Hydroacoustic Signal
     水中气泡群对水声信号传播的影响
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     It narrates the train of thoughts on the software design-brings in two conceptions-RECORD GROUP and COINCIDENCE RATE,decomposes the site of retrieval condition and judges the coincidence rate of a record group to all conditions, and then, carries out retrieving record groups on the basis of aceepted practice by which the original file has been designed.
     叙述了“分组检索”软件的设计思路—引入了“记录群”和“符合率”概念,在原库文件设计习惯的基础上,通过对检索条件集合的分解并判断记录群对条件的符合率,从而实现对记录群的检索。
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     (2) to alleviate or remove the residual pressure of the cervical muscular groups on the vertebral bodies;
     二是减轻或消除颈部肌群对椎体的残余压力;
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     Methods One hundred and fifty four cases were divided into good type of 102 cases, general type of 24 cases and bad type of 28 cases according to the response of mimetic muscle groups on the paralysis side to electric stimulation of discontinuous wave by G6805 electroacupuncture therapeutic instrument, and then they were treated by discontinuous wave of electroacupuncture combined with warming moxibustion.
     方法 :以瘫痪侧表情肌群对电针治疗仪断续波刺激的反应为指标将 15 4例患者分为良好型 10 2例 ,一般型 2 4例和不良型 2 8例 ,再采用电针断续波配合温和灸治疗。
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  集团对
     Influence of interest groups on change of structure corporate governance
     利益集团对公司治理结构变迁的影响
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     Analyzing Influence of Various Interest Groups on Basic Principles of Russian Foreign Policies
     试析利益集团对俄罗斯对外政策基本走向的影响
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     The Impact of Interest Groups on US China Policy
     利益集团对美国对华政策的影响
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     Based on the discussion of the meaning and rules of policy adjustment in educational system,the paper concretely analyzes the effects of interest groups on the process of American policy-making,implementation,evaluation,monitoring and ending.
     本文通过对教育政策利益调控的含义及其规律的论述,具体分析了利益集团对美国教育政策制定、执行、评估、监控和终结等各个政策环节的影响。
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     The Effects of Interest Groups on the American Educational Policy
     试析利益集团对美国教育政策的影响
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  “groups on”译为未确定词的双语例句
     AN INVESTIGATION OF BLOOD GROUPS ON THE MINORITY OF TUJIA IN LONGSHAN COUNTY
     龙山县土家族血型调查报告
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     The Effect of Substituted Groups on Complexing Capacity of Dibenzo-crown Ethers with Pb~(2+) and Cd~(2+)
     取代基对二苯并冠醚与Pb~(2+)和Cd~(2+)络合容量的影响
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     Theory on Approximation Linear Combination of Unit Orbital——The Effect of Terminal Functional Groups on the Electronic Structures of Acetylene Systems
     单元轨道线性组合近似理论——端基官能团对聚乙炔体系电子结构的影响
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     Effect of Neighboring Groups on Kinetics of Chlorosulfonation
     邻位效应对氯磺化反应动力学的影响
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     THE QUALITATIVE AND QUANTITATIVE STUDY OF THE INTERACTION BETWEEN MOLYBDATE AND SURFACE HYDROXYL GROUPS ON γ-Al_2O_3
     钼酸根与γ-Al_2O_3表面羟基相互作用的定性和定量研究
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  groups on
In this survey we shall prove a convexity theorem for gradient actions of reductive Lie groups on Riemannian symmetric spaces.
      
We consider free affine actions of unipotent complex algebraic groups on Cn and prove that such actions admit an analytic geometric quotient if their degree is at most 2.
      
A notion of a mixed representation of a quiver can be derived from ordinary quiver representation by considering the dual action of groups on "vertex" vector spaces together with their usual action.
      
In this paper, a characterization of almost periodicity of topological transformation groups on uniform spaces is given.
      
The results show that the composite microspheres were well dispersed in emulsion with uniform sizes and carboxyl groups on their surface.
      
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The main difficulty of the one-electron theory of optical activity lies in the calculation of the so-called vicinal actions. This may be overcome, as suggested in the present investiga- tion by assuming that the vicinal actions are due to the interactions of various chemical bonds in the molecule with the chromophoric electron. For the calculation of these interactions the charge distribution of a single covalent bond is assumed to consist of two nuclei, each of unit positive charge, separated by the bond distance...

The main difficulty of the one-electron theory of optical activity lies in the calculation of the so-called vicinal actions. This may be overcome, as suggested in the present investiga- tion by assuming that the vicinal actions are due to the interactions of various chemical bonds in the molecule with the chromophoric electron. For the calculation of these interactions the charge distribution of a single covalent bond is assumed to consist of two nuclei, each of unit positive charge, separated by the bond distance and two electrons with opposite spins and a spherically symmetrical orbital eigenfunction represented by (?) where r is the distance measured from a certain point on the bond axis and near the center of the bond. The location of this point is so determined that the model will give the proper dipole moment of the bond. The exponent α, which determines the extent of diffusivity of the electron cloud, is obtained by an approximate variational treatment. The quadruple moment of this model, calculated for the C-H bond, agrees very well with that estimated by Lassettre and Dean from a study of the potential barrier hindering the internal rotation of the ethane molecule. To test the theory and also to illustrate the procedure which is followed in calculating optical rotations using the new model of vicinal actions, the optical rotations of several methyl derivatives of cyclopentanone have been calculated and the following conclusions have been reached: (1) The proposed model gives rise to optical rotations in agreement with the observed values. (2) The effect of the internal rotation of the methyl group on the molecular rotation [M]_D of 3-methylcyclopentanone is large, [M]_D being +44° and -130° for the cis- trans-conformations, respectively. (3) The observed [M]_D may be regarded as composed of two parts, namely, the contribution from the multipole terms and that from the orbital overlapping. The latter corresponds to the "incomplete screening of atomic nuclei", and has been regarded as the most important vicinal action in earlier calculations. In the present work, it is shown, however, that this effect contributes only a few percent of the total [M]_D, unless the perturbing group is very near to the chromophoric group as it is in the case of 2-methyl- cyclopentanone. The failure of the previous calculations is, therefore, due mainly to the omission of the multipole (especially the quadrupole) terms. (4) The absolute configuration of 3-methylcyclopentanone, indicated by the present calculation, is the opposite of the one suggested by Eyring, since he based on the overlapping contribution alone, which bears a sign opposite to that of the total [M]_D (5) That the observed [M]_D of 2,4,5,5-tetramethylcyclopentanone is considerably smaller than that of 2,4-dimethylcyclopentanone may be due to one or both of the following possibilities: (a) that the conformation of the 2- and 4-methyl groups slightly deviates from the trans-position in the tetra-methyl compound, due to the presence of the two additional methyl groups; (b) that the two additional methyl groups in 5,5-positions are not exactly symmetrical with respect to the ring so that they make contributions to [M]_D.

本文在量子力學的單電子旋光理論的鄰近作用問題上,作了如下的貢獻: 1.指出旋光度應由分子中各化學鍵,而不是分子中各原子(如像前人所假定的)對於生色團電子的微擾作用來計算,兩者的主要不同點在於是否考慮鍵的多極矩。 2.建議在旋光度的計算中,共價單鍵可以看作是由兩個處於鍵端的正電荷和一個以單中心狀態函數,表示出來的電子雲所組成。根據這個假定計算了環戊酮的甲基衍生物的旋光度,其結果與實驗值甚爲一致(詳見結果討論)。 3.計算結果證明甲基的內旋轉對於旋光度的影響很大,例如順式和反式構型的3-甲基環戊酮的旋光度,應分別為+44°和-30°。 4.指定了3-甲基環戊酮的絕對構型,其結果Eyring所指定者相反。

The title compounds are formed by the reaction of an o-diphenol group with an antimony atom and have,according to Causse,the characteristic■ linkage.Close observations made on these compounds revealed certain mistakes that had slipped into the literature.(1)Not as the conclusion drawn by Causse,only a few such antimonyl compounds(those from water soluble o-diphenols)may have the hydroxyl group on the antimony atom replaced by chlorine upon treatment with hydrochloric acid.We were unable to repeat...

The title compounds are formed by the reaction of an o-diphenol group with an antimony atom and have,according to Causse,the characteristic■ linkage.Close observations made on these compounds revealed certain mistakes that had slipped into the literature.(1)Not as the conclusion drawn by Causse,only a few such antimonyl compounds(those from water soluble o-diphenols)may have the hydroxyl group on the antimony atom replaced by chlorine upon treatment with hydrochloric acid.We were unable to repeat the experiments of Causse on such a conversion for antimonyl gallic acid and antimonyl methyl gallate.(2)The antimonydioxy linkage is unstable toward hydrochloric acid,especially more concentrated ones.All compounds having such a group may be converted back into the original o-diphonol by hydrochloric acid.This observation is contrary to those recorded by Christianson and Hunter.(3)The same linkage is also unstable toward alkali,which is also contrary to the observations made by Christiansen and Causse.(4)Nevertheless,all such antimonyl compounds may still be recrystallized for purification from hydrochloric acid within limits of concentrations which vary with the compound in question.If the acid is much diluted,the compound is normally insoluble,but if it is more concentrated,it is liable to effect complete hydrolysis.The concentration suitable for the recrystallization is somewhere between these two limits.Generally,for compounds prepared from water insoluble o-diphenols the range of acid concentration is very narrow whereas for those from water soluble ones,though the range is much wider,the percentage of the recovery from recrystallization,as shown by antimonyl catechol and antimonyl pyrogallol with constant 15 minutes boiling,decreases with the concentration of the acid used. It is experimentally possible in the gallic acid series to bring the value of antimony content closer to that required theoretically by the recrystallization process.(5)It has been found that the aeetoxyl group attached to the ring is completely hydrolyzed to give a phenolic group during the process of recrystallization.in the gallic acid series,the carboxylic ester or amide group may practically survive the hydrolytic effect though a minute decomposition may be detected by the color test with 5% sodium bicarbonate.(6)1-Acetylpyrogallol has been prepared according to the German patent and converted into its antimonyl derivative by means of antimony trichloride in absolute alcohol.Thereby the original acetylpyrogallol must contain 1-acetylated compound,if it is not wholly this.The position of the acetyl group was not montioned in the original report.(7)One 1:1 antimonyl compound has been prepared by the action of tartar emetic or sodium antimonyI tartrate on 3-acetylgallic acid.This confirms the structure for the gallic acid derivative as proposed by Lesser and Gad on the solo ground of the color reaction with ferric chloride.This is,however,contrary to the statement made by Christiansen that if the hydrogen atom of one of the hydroxyl groups in gallic acid is replaced by an organic residue,the phenolic compound will no longer react with sodium antimonyl tartrate to give an antimony derivative.(8)Contrary to the statements by Causse and by Christiansen,catechol has been found to yield antimonyl derivative by tartar emetic in a more concentrated solution.The failure to give a precipitate in a more diluted solution is ascribed to the solubilizing effect of the acid potassium tartrate formed in the reaction.From such a solution the antimonyl catechol may also be precipitated by means of adding sodium chloride.

对于含■Sb-OH 基团的1:1鄰二酚型氧锑化合物作了性能上的观察,并尝试利用这类化合物以作分离或证明鄰二酚类:(1)惟有个别的少数这类锑化合物(母体水溶性的),其锑上的羟基能经盐酸处理而为氯原子所取代,故不能作为普遍的事实,如 Causse 所肯定者。(2)酚型锑二氧键遇一定浓度以上的盐酸则显不安定。每一含这基团的氧锑化合物都能经盐酸处理而得回原来的鄰二酚,与一般认为对盐酸稳定之说不同(Christianson及 Hunter)。(3)酚型锑二氧键对硷也不稳定,与 Causse 及 Christians(?)n 的结果亦不同。(4)这类氧锑化合物仍一般都能为一定浓度的盐酸重结晶而达到纯化,惟分子中不能兼含有乙酰化酚基,因其能完全水解而脱去乙酰基,至酯基或酰胺基则大致无碍,虽然各该基团有些许水解。(5)曾从按照一德国专利所获得的产物中,分离出1-乙酰焦没食子酚锑,从而说明在该产物中至少含有1-乙酰焦没食子酚。(6)以吐酒石或酒石酸锑钠制得3-乙酰没食子酸的氧锑化合物,从而证实了 Lesser与 Gad 所拟的乙酰基位置,并且证明 Christiansen 的结论不确。(7)儿茶酚能与吐酒石成锑化合物,至其所以...

对于含■Sb-OH 基团的1:1鄰二酚型氧锑化合物作了性能上的观察,并尝试利用这类化合物以作分离或证明鄰二酚类:(1)惟有个别的少数这类锑化合物(母体水溶性的),其锑上的羟基能经盐酸处理而为氯原子所取代,故不能作为普遍的事实,如 Causse 所肯定者。(2)酚型锑二氧键遇一定浓度以上的盐酸则显不安定。每一含这基团的氧锑化合物都能经盐酸处理而得回原来的鄰二酚,与一般认为对盐酸稳定之说不同(Christianson及 Hunter)。(3)酚型锑二氧键对硷也不稳定,与 Causse 及 Christians(?)n 的结果亦不同。(4)这类氧锑化合物仍一般都能为一定浓度的盐酸重结晶而达到纯化,惟分子中不能兼含有乙酰化酚基,因其能完全水解而脱去乙酰基,至酯基或酰胺基则大致无碍,虽然各该基团有些许水解。(5)曾从按照一德国专利所获得的产物中,分离出1-乙酰焦没食子酚锑,从而说明在该产物中至少含有1-乙酰焦没食子酚。(6)以吐酒石或酒石酸锑钠制得3-乙酰没食子酸的氧锑化合物,从而证实了 Lesser与 Gad 所拟的乙酰基位置,并且证明 Christiansen 的结论不确。(7)儿茶酚能与吐酒石成锑化合物,至其所以不能在较稀的水溶液中析出,乃受反应产品酸性酒石酸钾的溶解影响,若加以食盐,亦能析出。

Sulfonated coal possesses very good adsorption action for phenols and its homologues. The experiment mentioned here systematically investigated the adsorption rates, the equillibrium concentrations and the factors affecting the adsorption action of the sulfonated coal for phenolic compounds. The results obtained show that the adsorption rates of sulfonated coal for phenolic compounds are very rapid and the equillibrium reached after 90 minutes. Among the homologues, the adsorption of phenol is preferential....

Sulfonated coal possesses very good adsorption action for phenols and its homologues. The experiment mentioned here systematically investigated the adsorption rates, the equillibrium concentrations and the factors affecting the adsorption action of the sulfonated coal for phenolic compounds. The results obtained show that the adsorption rates of sulfonated coal for phenolic compounds are very rapid and the equillibrium reached after 90 minutes. Among the homologues, the adsorption of phenol is preferential. The experiment proves that the adsorption is substantially the action of the active center of sulfonated coal upon the hydroxyl group on the aromatic rings. Applying the above conclusions, the approximate total quantity of phenolic compounds adsorbed on sulfonated coal may be obtained when various samples of waste water of different phenolic compound content are treated with sulfonated coal. In case the operation temperature is raised to 70℃, the adsorption concentration decreases apparently, but low temperature (<10℃)is also disadvantageous. Generally, temperature in the range 20-30℃ is favorable. It is obvious that high temperature favors the desorption of phenolic compounds from sulfonated coal. When the pH value of the solution gets above 8, the adsorption of phenolic compounds on sulfonated coal decreases apparently, a sharp drop being observed. The presence of sulfides in solution weakens the adsorption of phenolic compounds on sulfonated coal on account of the formation of phenolates. Other impurities such as amino- and cyano- compounds as well as organic acids do not show apparent influence, if their concentration is not higher then their usual content in waste water. Excessive alkali in solution apparently suppresses the adsorption ability of sulfonated coal for phenolic compounds, and even blocks up the action entirely. In short, either in view of the adsorption rate or the factors affecting the adsorption process, the facts obtained prove that the dephenoling action of sulfonated coal is an adsorption rather than an ion-exchange process.

磺化煤能够有效的脱除煤焦油污水中的酚类,以前的试验对磺化煤的脱酚效果,使用寿命和再生条件等进行了一系列的考察,证明它是一个简易可行的方法,并初步拟定了一个利用磺化煤脱除煤焦油污水中酚的工艺流程。 在此基础上,又对磺化煤吸附酚类的速度,操作平衡吸附量,及影响吸附过程的因素等,进行了较为详细的考察,为今后进一步的深入研究和发展,提供了新的线索和理论根据。试验结果多方面肯定了磺化煤脱酚是吸附过程。

 
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