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  具有代表性
     1. Introducing and analyzing some representative design automation systems of embedded systems. They are Cool Cosyma SpecSyn Chinook Polis and Corsair.
     1.介绍和分析了具有代表性的嵌入式系统设计自动化系统,如Cool、Cosyma、SpecSyn、Chinook、Polis和Corsair等。
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     The problems related to manufacturability evaluation are introduced, some representative methods and systems are reviewed,and their characteristics are identified.
     介绍可制造性评价研究中的几个问题 ,对基于特征的可制造性评价方法进行分类 ,介绍了具有代表性的方法和系统并阐述各个方法的特点。
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     The dissertation is aimed at establishing a new process for highly efficient separation of platinum, palladium, iridium, rhodium and gold, in which some representative samples such as platinum and palladium concentrates, copper and lead anode muds, crude copper and lead and alloys of precious metals were tested.
     本论文以建立铂、钯、铱、铑、金高效分离流程为目标,以铂钯精矿、铜阳极泥、铅阳极泥、粗铜、粗铅、贵金属二次合金等几类具有代表性的贵金属资源为对象,以离子交换色谱为手段,从理论和应用上为解决贵金属分离中普遍而长期存在的上述技术难题探索一条新的途径。
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     It also studies the mechanism, influencing factors and some representative models of the bidding system.
     还介绍了竞价上网的运作机制、上网电价的影响因素以及几种具有代表性的上网电价定价模式。
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     The basic structure and implementation of a program transformation system, which is based on transformation to derive program, is proposed. Some representative achievements are cited.
     本文概述了程序变换的基本思想,阐述了基于变换技术导出程序的程序变换系统的基本结构及其实现方法,最后概要介绍了一些具有代表性的研究成果。
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  “some representative”译为未确定词的双语例句
     Comparative Analysis of Some Representative Models of Viscosity Versus Pressure in the Case of Various Hydrocarbons and Their Mixtures
     Comparative Analysis of Some Representative Models of Viscosity Versus Pressure in the Case of Various Hydrocarbons and Their Mixtures
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     Some representative preionization technologies of TEA-CO_2 laser
     TEA-CO_2激光器的几种典型的预电离技术
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     The four elements in some representative tobacco samples were also predicted with the models,and the predictive relative errors were 5.1%,9.0%,7.6%,and 8.1%,respectively.
     并用该模型预测了一批有代表性的预测集样品中这4种元素的含量,其相对误差分别为5.1%、9.0%、7.6%和8.1%。
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     This paper lists some representative models of NIDS and algorithms which judge if the actions are intrusions and to what degree they adapt to PPDR model, then puts forward a new NIDS theory model-Self Learning network Intrusion Detection System MODEL (SL_NIDS).
     本文首先介绍了NIDS的产生背景,接着介绍了其中比较有影响的模型和检测算法以及现有NIDS存在的问题,在其基础上提出了一种新的网络入侵检测系统理论模型(Self Learning Network Intrusion Detection System MODEL简称SL_NIDS)。
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     This paper gives some representative non-linear models in the prediction of reservoir performance, introduces the basic principle and calculation steps of heredity algorithm, and discusses its application in reservoir performance prediction.
     阐述了油藏动态预测中的几类有代表性的非线性模型, 简单介绍了遗传算法的基本原理及计算步骤, 探讨了其在油藏动态预测中, 求解几类非线性模型的应用, 该方法易于在计算机上编程实现。
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     The massspectrums of some representative compounds were explained in detail.
     文中并对代表性化合物的质谱裂解做了详细解析。
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     Some representative models of every category are reviewed.
     每一类理论都有代表性的模型,并各有其优缺点。
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     On K- representative Domains
     K──表示域
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     Some defects of G.
     对G.
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     Some Things
     世界上有些东西
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  some representative
Because there are many researches on the field of internal medicine, just some representative reports focusing on this topic were selected in this paper.
      
Because there are so many articles on internal medicine, some representative reports were selected and further reviewed.
      
By some representative examples, it was validated that the Lagrangian theoretical framework of dynamics of nonholonomic systems is right.
      
Comparative analysis of some representative models of viscosity versus pressure in the case of various hydrocarbons and their mi
      
It is compared with simulations performed for some representative cases.
      
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The study, of fluorescence analysis of coals in some representative coalfields is probably a new work in coal petrology of China.

作者采用荧光显微观察和荧光测定方法研究了各种煤的荧光显微组份的 特征及其与煤级的关系,测量了相对荧光强度以及各种煤的荧光光谱曲线的扫 描;指出某些煤田煤随着煤级增高所表现的若干荧光性的变化并初步总结了煤 化过程中荧光现象的种种变化。参照目前Jacob,Alpern,Ottenjann等的研 究成果,作者考虑了煤化跃变以及附增荧光和荧光影响因素的问题。

A series of 4-N-acyl analogs of cis-3-methylfentanyl were synthesized and their analgesic activity and duration of action of some representative compounds were tested. In preliminary pharmacological tests all compounds in this series exhibited typical morphine-like action. The analgesic activity of compounds 1, 2, 3, 7, 17 was over 100 times more potent than that of morphine. The duration of analgesic action of compounds 4, 7, 17 was longer than that of both fentanyl and cis-3-methylfentanyl.Structure-activity...

A series of 4-N-acyl analogs of cis-3-methylfentanyl were synthesized and their analgesic activity and duration of action of some representative compounds were tested. In preliminary pharmacological tests all compounds in this series exhibited typical morphine-like action. The analgesic activity of compounds 1, 2, 3, 7, 17 was over 100 times more potent than that of morphine. The duration of analgesic action of compounds 4, 7, 17 was longer than that of both fentanyl and cis-3-methylfentanyl.Structure-activity relationships are briefly discussed.

合成了一系列顺-3-甲基芬太尼4-N-丙酰基的类似物。测定了镇痛活性及部分代表性药物的镇痛作用时间。初步结果表明,该类衍生物有吗啡样镇痛活性,化合物1,2,3,7和17的镇痛活性均为吗啡的100倍以上。但均低于母体化合物顺-3-甲基芬太尼(7209)。化合物4,7,17的镇痛作用时间比芬太尼或顺-3-甲基芬太尼均有一定延长。

In the spectra of charge-transfer complexes there often appear overlapping double-or multi-bands which need correct deconvolution to obtain meaningful results. In this report, we shall present a method for deconvoluting the multi-band spectra of chargetransfer complexes.It is generally acknowledged that the appearance of double-bands in the spectra of charge-transfer complexes is due to (1) the transfer of an electron from the highest and next-highest occupied orbitals of a donor to the the lowest unoccupied...

In the spectra of charge-transfer complexes there often appear overlapping double-or multi-bands which need correct deconvolution to obtain meaningful results. In this report, we shall present a method for deconvoluting the multi-band spectra of chargetransfer complexes.It is generally acknowledged that the appearance of double-bands in the spectra of charge-transfer complexes is due to (1) the transfer of an electron from the highest and next-highest occupied orbitals of a donor to the the lowest unoccupied orbital of an acceptor, or (2) from the highest occupied orbital of a donor to the lowest and the next-lowest unoccupied orbitals of an acceptor. For the sake of brevity, we assume that △hv=hv_2hv_1=I_2-I_1 and propose that the relation △hv/hv=αβ, where hv=(hv_1+ hv_2)/2 and α and β are two dimensionless parameters specific, respectively, to the acceptor A and the donor D, can be used to correlate and deconvolute the double-bands of a π-πCT spectrum. We shall justify its reasonableness in the following manner.Let I_i be the average value of the ionization potentials of the highest and next-highest occupied orbitals of the ith donor D_i and Q_k the characteristic parameter of the kth acceptor A_k. Define hv_(ok)=I_o-Q_k,hv_(io)=I_i-Q_o,hv_(oo)=I_o-Q_o and hv_(ik)=I_i-Q_k. By using the identity(I_i-Q_k)(I_o-Q_o)=(I_i-Q_o)(I_o-Q_k)+(I_i-I_o)Q_k- O_o)(1)and substituting the hv's defined above, we obtain Hv_(ik)=hv_(io)·hv_(ok)/hv_(oo)+(I_i-I_o)(Q_k-Q_o)/hv_(oo)For π-π systems in Table 1 in the Chinese Text, it is found possible, by selecting I_o equal to the average of the I'_is(-0.84+I_B)and Q_o to that of Q'_ks (-3.27+-I_B)to make the second term on the right of equation (2) negligible compared to the first term, the error thus introduced being smaller than±3%. To other CT systems such argument might not apply.Since hv_(oo) is a constant, hv_(io) and hv_(ok)are, respectively, related only to D and A,it follows that hv_(ik) is expressible as a product of a donor-specific and an acceptor-specific factor. Recalling the fact that Δhv=I_2 - I_1 is a function of D only, we setΔhv/hv=αβ(3)Where α and βare, respectively, dependent on A and D only. Since only the product aβ, rather than a and β individually,appears in the final formula, one may select a particular acceptor (or a particular donor) as a standard and set its a value (or the ft value)equal to 1. In case that △hv=0,i. e. degeneracy occurs, we may set a or βto zero.We have calculated 49 such spectra in which double-bands appear, but their peaks can be clearly drawn. Some of them are used for evaluating the values of a and β, the rest for testing the validity of this model. It has been found that the deviation between the calculated and the measured values is less than ±3% (Table 1).We have proved that this scheme can be extended to deconvolute the CT spectra arising from nitro-derivatives of fluorenone with different donors, and the lowest CT peaks are used to evaluate the electron affinities(E_A)of these acceptors.The results,together with those reported in literatures,are shown in Table 2 and Table 3.Some comments on our EA values are now in order. Firstly, these values have been obtained by using different donors and are in good agreement in a self-consistent way.Secondly, if one plots the E_A values vs. number of nitro-substituents, a good linear relationshap is obtained (Fig. 1). It seems that E_A values depend mainly on the number of nitro substituents, although a minor isomer variation for a fixed number of nitro groups can be seen, and this seems to us quite reasonable. Except for TNF, TeNF, and 2, 4-DNF, Mukherjee's polarographs did not follow the one-electron reduction scheme.He also reported in the same paper the E_A of the eight nitro derivatives of △~9-fluoren α-malononitrile for which the one-electron reduction scheme was followed. If one plots E_A values for these compounds vs. number of nitro substituents, a good linear relationship is also obtained. This gives support indirectly to the above point of view.Experiments on the absorption spectra of nitro derivatives of fluorenone complexed with different donors were performed in our laboratory and some representative curves reported in Fig. 1~3.

本文在分析一系列π-π体系电荷转移(CT)双重吸收光谱的基础上,提出一个双重带峰值间的关系式Δhv/hv=αβ,其中α和β是两个无量纲的参数,分别表示受体A和给体D的特性。用此模型计算了约五十种体系的双重光谱数据,并与实测值对比,发现此式能将所收集到的数据关联至偏差在±3%以内。将此模型用于分析硝基芴酮系列与不同给体的CT光谱,求得其最低能带峰值(hv_1)。然后用通常方法求得各受体的电子亲合能(E_A)。但此模型只适用于π-π弱电荷转移复合物的一定体系。

 
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