查询词典 boundary condition

A class of elliptic problems in Orlicz-Sobolev space with Neumann boundary conditions are studied. The sublinear case and the superlinear case are discussed, and using the classical critical point theory with the Cerami compactness condition two existence theorems are given.

研究一类在Orlicz-Sobolev空间上具有Neumann边界条件的椭圆问题，分别讨论了次线性和超线性情形，利用满足Cerami紧性条件的经典临界点理论给出两个解的存在性定理。

The system contained two elliptic equations with the Stefan condition on the boundary of this problem.

该问题是由二个椭圆型方程耦合，并带有称为Stefan条件的一个自由边界问题。

Synthetic material data and physical model analysis as well as experimental deformation contrast have demonstrated that the deformed gravel underwent the prolonged and simultaneous multi-boundary external force condition and the equilibrant system characterized by intensiveness and scattering.

中文摘要：经过多年的区域地质调查和第四纪环境演变的分析，对庐山芦林盆地大校场谷口剖面松散沉积物中变形砾石进行岩石显微构造学的研究。

According to the Logistic Equation and the impact of stochastic factors, a stochastic nonlinear dynamical model had been presenred. The max Lyapunov exponent was calculated by Oseledec multiplicative ergodic theory, the local stability conditions had been obtained; the global stability conditions had also been obtained by judging the modality of the singular boundary; the stochastic Hopf bifurcation was analyzed using the invariant measure of stable probability density, and the condition of stochastic Hopf bifurcation had been discussed. The key parameter impacting the urban domestic water consumption had been found by numerical emulation.

根据Logistic阻滞增长模型原理，考虑到诸多随机因素的影响，本文建立了一个城市生活用水量的随机非线性模型，运用Oseledec乘性遍历定理计算了模型的最大Lyapunov指数，得到了局部稳定性的条件；通过对扩散边界性态的分析，得到了全局稳定性的条件；通过分析系统平稳状态概率密度的不变测度，得到了模型随机Hopf分岔的条件，结合实际进行了数值仿真，得到了影响用水量的关键参数。

Firstly numerical simulations of 2D turbulence flow over trains with wall and without wall are performed so as to investigate mesh, turbulence model, boundary conditions and relative parameters, at the same time, through the analysis characteristics of flow field and aerodynamic forces are acquired for the train under static condition.

首先进行列车有挡风墙和无挡风墙情况下的二维湍流绕流数值计算分析，研究模型网格、湍流模型、边界条件以及有关的参数设置和选取，并获得列车在二维绕流情况下静止时的流场特性与气动力。

The boundary is the first condition for harmonious society during the transformation of the society.

在此，笔者把国际关系上有关边界的概念引入和谐社会的建构，提出社会边界的范畴。

Then, under the consideration of mixed boundary value condition, a pair of dual integral equations for the rocking vibrations of a disk on saturated grounds are obtained, which can be reduced to a Fredholm integral equation of the second kind and solved by numerical procedures. Consequently, the dynamic compliance coefficient is evaluated and numerical results are presented to portray the influence of poroelastic effects on the dynamic interaction problem.

对于刚性圆板，作者首先采用Hankel变换对波动方程进行求解，得到了该控制方程在Hankel变换域内的通解，然后由混合边值条件建立了饱和地基上刚性基础摇摆振动的对偶积分方程，并将其化为第二类Fredholm积分方程，用数值方法计算了不同频率下基础的动力柔度系数，从而考察孔隙水的存在对基础摇摆振动特性的影响。

The Ar_Pt boundary could be related to the changes of physical condition e.g. the fugacity of oxygen.

Ar-Pt界限可能与地幔熔融时物理条件如氧逸度的改变和地幔富集作用有关。

This paper is based on the features of technics structure, operation condition, import and export boundary conditions, characteristics of medium of petrochemical pipeline and so on. The simulative computational theory and model of multiphase flow are established according to the method of CFD to analyse the hydrokinetics redical factors that can affect the pipe erosion damage of multiphase flow.

本文针对石化管道的工艺结构、运行工况、出入口边界条件和工艺介质特性等特点，基于计算流体力学的方法对多相流进行仿真理论计算及模型建立，以此来分析影响管内多相流冲蚀破坏的流体动力学关键因素。

An ideal boundary, which stands for the limit condition of real feature under meeting design demands, can be formed by suitable dimensional and geometrical tolerance s.

理想边界是由尺寸公差和形位公差综合形成的，它代表实际要素在满足设计要求条件下的极限状态。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了