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extremum
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  极值
     The entropy energy of Mg_5Al_8 at 725K was more than that at 460K, the extremum at 460K much approached to zero;
     725K时Mg_5Al_8熵能明显高于460K,460K时的极值点更靠近零点。
短句来源
     Weak Extremum Principle about the Odd Problem of Equation“Euler-Poisson-Darboux”
     Euler-Poisson-Darboux方程的奇性问题的弱极值原理
短句来源
     An Extremum Theory of the Residual Functional in Sobolev Spaces W~(m,p)(Ω)
     Sobolev空间W~(m,p)(Ω)中残差泛函的极值理论
短句来源
     This paper proves a weak extremum principle about the odd problem of equation "Euler-Poisson-Darboux"if β+β'>1.
     本文对Euler-Poisson-Darboux方程的奇性问题证明了当β+β'>1时的一个弱极值原理.
短句来源
     SQP METHODS FOR CONSTRAINED EXTREMUM PROBLEMS
     约束极值问题的SQP方法
短句来源
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  “extremum”译为未确定词的双语例句
     In literature[2],the general form and lower bound of the inequalty nan-xn≥a-xt,(a>0,λ>0,n∈N={1,2,…},0≤x≤λextremum method.
     在文献[2]中给出了不等式nan-xn≥a-xt,(a>0,λ>0,n∈N={1,2,…},0≤x≤λ
短句来源
     θ_1 and θ_2 are symmetrical to the θ_0. The extreme values of θ are 40.4° and 90° ( forβ, 49.6° and 0° ) The faults closing to or exceeding the extremum of θ are able to be earthquake rupture faults.
     θ_1与θ_2以θ_0为对称,其极限为40.4°和90(β的极限为49.6°和0°)。 接近或大于此极限值的断层是地震破裂断层。
短句来源
     The zero-crossing and extremum estimation (ZCEE) algorithm was put forward to compute the amplitude envelope and instantaneous frequency.
     提出了基于过零点和极点估计(zero-crossing and extremum estimation,ZCEE)求取幅度包络和瞬时频率的算法。
短句来源
     In solutions in 90% ethanol(EtOH)or trifluoroethanol(TFE)at pH5.8,NAGAN reveals CD spectra with a negative 218 nm extremum.
     pH5.8时加乙醇或三氟乙醇至90%,五肽给出218 nm 附近的负峰。
短句来源
     Discussion about Extremum in Beeline Process of T-S Chart
     T-S图上直线过程极值的讨论
短句来源
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  相似匹配句对
     The Remarks on Extremum
     关于极值问题的一个注记
短句来源
     Discussion on the Extremum of Maps
     映射极值问题的讨论
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  extremum
Thus, the Cv of LAI is regarded as the extremum of that of throughfall.
      
The global extremum (minimum) of this dependence, which was accepted as the goal function, was used as a criterion for designing the algorithm optimizing the gripper position on the load axis upon stabilizing the angular motion of the module.
      
The calculated extremum is used in the loop of adaptive adjustment of the gripper parameter, which prevents resonance swinging of the flexible load transported to the place of installation.
      
Computer experiment demonstrated, however, that the iterative procedure stabilized after several steps, although the global extremum was not necessarily attained.
      
An effective method for finding the global extremum in identifying a logical-probabilistic risk model within reasonable computation time is developed.
      
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The three-dimensional properties of des-pentapeptide insulin (DPI) in solution have been studied by several methods, in view of the obvious fact that such knowledge would have much to bear on the structure of the binding site of insulin.(1) The molecular weight of DPI was studied by the gel filtration method. The results demonstrate that DPI does not exhibit self-association behaviour, and exists as monomer under the experimental conditions. This enables us to deduce that insulin binds its receptor in the monomer...

The three-dimensional properties of des-pentapeptide insulin (DPI) in solution have been studied by several methods, in view of the obvious fact that such knowledge would have much to bear on the structure of the binding site of insulin.(1) The molecular weight of DPI was studied by the gel filtration method. The results demonstrate that DPI does not exhibit self-association behaviour, and exists as monomer under the experimental conditions. This enables us to deduce that insulin binds its receptor in the monomer form; its action unit is the monomer.(2) The pH difference spectra, denaturation difference spectra, and temperature effect curves were examined. The results indicate that all three tyrosyl side chains of DPI are unmasked and situated on the surface of the molecule.(3) The UV CD curves of DPI were also studied. The far UV CD curve of DPI at pH 7.0 is similar to that of insulin, except that the negative value for [θ]_(220) decreases. This probably demonstrates that the peptide backbone conformation of DPI is very similar to that of insulin except that it is slightly extended for the former. The near UV CD curve for DPI differs from that for insulin and has an extremum at 266 nm and a low negative value of [θ]. The assignment of this extremum to Phe and/or -S-S- was discussed.Taking into consideration the results given in proceeding papers it may be concluded that the results of conformation research support our previous working hypothesis that the hydrophobic surface in between the two monomers that make up dimeric insulin constitutes a part of the receptor-binding site of insulin.

研究去B链羧端五肽胰岛素(DPI)的空间结构对了解胰岛素分子的结合部位是重要的,本文研究了它的部分空间结构性质。1.用凝胶过滤法研究了DPI的性质,说明接近生理环境的条件下(pH7.0,离子强度0.3),DPI没有自缔合性质,而是以单体存在。因此推论胰岛素的作用单位是单体,它以单体与受体结合并传递信息。2.用紫外差吸收法测定了DPI的pH差光谱,变性差光谱与热变性曲线。这些结果说明DPI的三个酪氨酸侧链暴露在分子表面。3.测定了DPI的圆二色性(CD)曲线。pH7.0时,远紫外CD曲线与胰岛素相似,但[θ]220毫微米负值变小。这可能说明DPI的主链与胰岛素基本相同而略有松散。近紫外CD曲线与胰岛素很不相同,谷顶在266毫微米,[θ]负值变小。讨论了Phe与-S-S-提供贡献的可能。结合本系列工作的Ⅲ、Ⅳ两文,可以认为,DPI的空间结构研究的结果支持胰岛素分子二体内单体间的疏水面是结合部位的一部分这一假设。

This paper describes the characteristics of the precursors of sudden changes and the regularity of their distribution in accordance with time and pregnant shock locality. We adopted the method of extremum coincidence and the accumulated data of precursor patterns, trying to make a certain number of experimental predictions about a part of the strong earthquakes in the world. The results obtained may be encourraging for further investigation.

本文介绍突变前兆的特性及其按时间分布和按层震区分布的规律。采用极值重合法及所积累的前兆模式资料对全球部分强震作出了某些试验性预报。这些结果也许是令人鼓午的。

The present paper is devoted to the search for variational principles for the direct aerodynamic problem of channels and aerofoil cascades (with prescribed distributed mass injection or/and suction along the profile contours for blade cooling or boundary layer control) on an arbitrary stream sheet of revolution and aimed mainly at providing a rigkms and sound theoretical basis for introducing and widely applying the finite element method to computational aerodynamics of turbomachines. Three generalized variational...

The present paper is devoted to the search for variational principles for the direct aerodynamic problem of channels and aerofoil cascades (with prescribed distributed mass injection or/and suction along the profile contours for blade cooling or boundary layer control) on an arbitrary stream sheet of revolution and aimed mainly at providing a rigkms and sound theoretical basis for introducing and widely applying the finite element method to computational aerodynamics of turbomachines. Three generalized variational principles (among which two are for homoentropic flow, and the other for nonhomoentropic flow) are developed first, and then from them three families of variational principles are derived respectively by means of successive transformations. Furthermore, for homoentropic subsonic flows a pair of dual extremum principles are also shown to exist.Special attention is payed to taking full advantage of 2 effective means: "natural boundary conditions" and "artificial boundaries", in order to greatly simplify the numerical treatment of various boundary conditions characterizing the complexitg of the cascade problem. So in all variational principles all boundary conditions have been converted to natural ones.The variational principles presented here can be used to advantage as basis also for variational-finite difference method and for various direct variational methods (e.g. Ritz's method, Kantorovich's method etc.).

本文致力于任意旋成面叶栅和流道气动正命题(沿叶面可有气体喷人或吸出,例如边界层控制、气膜式或发汗式冷却等)的变分原理的探索研究,为在叶轮机气动计算领域中引进和推广有限元法提供一个较严密的理论基础.结果有:1.对均熵流动,建立了两条广义变分原理,并从它们派生出两族亚广义变分原理,包括亚声速下的一对互偶极值原理;2.对非均熵流动,建立了一条广义变分原理,并由此派生出一族亚广义变分原理.文中着重充分发挥自然边界条件和人工界面的有力作用,以简化叶栅复杂多样的边界条件的处理.除用于有限元法外,它们也为变分一差分法和各种变分直接解法创造了有利条件.

 
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