查询词典 variational problem

With the improvement of the structural complication and strength index of the engine structure, during the work process, the bending-shaft produce bent and torsion because of the action of periodicity variational air pressure, inertia pressure evocabled by the to-and-fro and whirligig motion and torque, therefore, engine bending-shaft must be provided with the preferable fatigue intensity and the structure rigidity through making use of the material of high intensity and the reasonable forging technique.

随着发动机结构的复杂化和强化指标的不断提高，曲轴在工作过程中，由于受到周期性变化的气压力、往复和旋转运动引起的惯性力以及弯矩、扭矩的共同作用，既产生弯曲又出现扭转，这就要求发动机曲轴具有高的疲劳强度和结构刚度。

Based on variational principle and split-based interpolation finite element method for fast and accurate analysis of normal mode helical antenna,Combination of genetic algorithm and then load the normal mode helical antenna loaded on the value of lumped elements,Load location,and matching network integrated optimal design parameters,And using Sherman-morrisorr Woodbury formula to quickly solce the load component values and load the changed position of the impedance matrix equation to improve the efficiency of optimized design.

采用基于变分原理和剖分插值为基础的有限元法来快速精确分析法向模螺旋天线，然后结合遗传算法对加载法向模螺旋天线上的加载集总元件的值、加载位置以及匹配网络参数进行一体化优化设计，并采用Sherman-Morrisorr Woodbury公式来快速求解加载元件值和加载位置改变后的阻抗矩阵方程，提高优化设计的效率。

In spite of the very close affinity between the variational theorems and the principle of virtual work, the study of the former is worth-while

尽管变分定理与虚功原理之间有很紧密的相似关系，然而对前者的研究仍然是有价值的。

We investigate the phase transition s of Abelian lattice gauge theories at finite temperature with the variational cumulant expansion.

应用交分累积展开方法系统地研究了（2＋1）维和（3＋1）维的Z（2）、Z（3）、U（1）阿贝尔格点规范理论在有限温度下的相交。

Gradient visual angle, segment scene, variational planar space and anamorphic figure made up of his painting language.

倾斜的视角，截取片断似的场景，富于变化的平面空间，变形的形象都是他画面中的常用符号。

Then we present our studies on several novel quantum phenomena in the rotating and molecular BECs. In the averaged vortex approximation, a fast rotating BEC in an anharmonic potential is studied in variational method.

研究结果很好地解释了实验中所呈现出的许多令人迷惑的新奇现象；同时，证明了在非简谐振子势下，快速旋转的BEC中能够形成带多个单位角动量的涡旋。

Combining PRISM theory, MD simulation and Variational method, a single-site semi flexible model is proposed to describe atactic polystyrene melt.

结合PRISM理论、MD分子模拟和变分法，得到了可以描述聚苯乙烯熔体的单点半柔性链模型，提出了一个研究实际聚合物体系的有效方法。

As far as soil type are concerned, the transplant-enrichment of base in Calcic Soils is more abvious than Non-Calcic Soils,however, different soils type is variational.

就土壤类型而言，钙质土中全部盐基元素的迁移聚积均强于非钙质土，但不同具体土壤类型又有所变化。

A plenty of his literary works which theme is about country, from the crosspoint of realism and history's view, feel, collect, grasp and reflect the country's life in new period, which gives an historical outline of Chinese country's devious development in last decades of years and people's process of variational spirit.

他所创作的大量农村题材的文学作品，站在现实与历史相交合的角度上，感受、看取、把握、反映新时期的农村生活，勾勒出几十年来中国农村曲折发展的历史轮廓和人们的精神历程。

The electronic structures of Dawson anion(S2Mo18O62)4- have been calculated by the discrete variational method coupled with the first principal density functional theory.And the comparison with Keggin anion(SMo12O40)2- has been made.The results show that the electrons delocalize around the all anion.But the difference of the electronic distributi on of polar and equator sites exists.

使用第一原理密度泛函理论中的离散变分方法对（S2Mo18O62）4-的电子结构进行了理论计算，并与Keggin结构（SMo12O40）2-的电子结构作了比较分析，结果表明，（S2Mo18O62）中的电子离域地分布在整个阴离子骨架中，但极位和赤道位原子的电荷分布有明显差异。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。