查询词典 boundary condition

In the first part, we discuss the properties of solutions of (0.1) system with dif-ferent diffusion coefficient and the second boundary condition. The stability of non-negative constant solutions is given, some prior-estimate of the positive steaystateare proved by using the maximum principle and lower-upper solutions, the non-existence of non-constant positive solution, the global exitence of non-constant pos-itive solution and bifurcation solution of non-constant positive steady-states areobtained.

第一章讨论了系统(0.1)在扩散系数不相同的情况下非负常数解的稳定性，运用极值原理，上下解方法确定了系统(0.1)正平衡态解的一些先验估计，然后讨论了非常数解的不存在性，非常数正平衡态解的全局存在性及非常数正平衡态的分歧解。

Based on the boundary condition and temperature diffusivity determined sectionally, the heating time obtained from calculation is con...

根据金相组织观察及硬度分布测定，确定了45钢的加热系数k=0.9，40Cr钢的k=1.0，T10钢的k=1.0，并指出这三种钢均不需要保温时间。

In addition to measurements of conventional dynamic parameters o n a model surface,an optical observation method was employed,which directly reco rded self-luminosity of high temperature gas induced by a two-dimensional mode l in high enthalpy flow and combustion radiation.Hypersonic flow fields passing over a sharp strut including fuel injection were displayed and recorded with a high-speed CCD camera.A phenomenon of supersonic diffusive combustion under fre e boundary condition was observed.

实验除测量常规流场参数和模型表面的动态参数外，主要使用二维实验模型，利用高温气体的自发光和燃烧伴随的发光现象，采用高速摄影技术来观测燃烧现象，记录到高焓流场中叠加燃料喷射和燃烧的流场，观察到自由边界条件下扩散控制的超声速燃烧现象。

The lateral displacement of lattice shell is obtained by separation of variables for fixed boundary condition.

在周边固定条件下，用分离变量函数法给出网壳的横向位移。

According to the reasonable boundary condition and simplified equation,adpotes thedynamic pressure supporting method of combined vane with rotatable supporting part to solve thepresent key difficulties which result from the serious rub of highly rotating single-action vane pumps tator internal surface.

根据粘性流体润滑理论的雷诺方程，探讨了采用可摆动支承面的组合式叶片的动压支承方法，解决高速旋转单作用式叶片泵定子内表面摩擦严重的问题，为与原动机同轴同步高速旋转叶片泵机件的研制提供了一种新的设计方法。

The methods of handing the inital velocity field, velocity singular point and velocity boundary condition have been proposed.

根据功能预测的任务，采用刚——粘塑性模型，用三维有限元模拟了辗边全过程咬料——稳定辗边——抛料。

A 3D finite difference time domain solution was presented and Mur absorbing boundary condition was deduced.

给出了矿井全空间瞬变电磁场的时域有限差分法算法，并推导了Mur吸收边界条件。

The specific forms of charge transportation equation in a simple pipe for the two flow states were derived. The treatment method for boundary condition of the equation was studied.

分别推导出了两种流态下简单管道内电荷输运方程的表达式，并对方程的边界条件处理进行了研究。

Applying the boundary condition in the interface between the uniaxial anisotropic medium and free space, the surface of the conducting sphere, the expansion coefficients of electromagnetic fields in terms of spherical vector wave function in uniaxial anisotropic medium are obtained, and then the expansion coefficients of scattering fields and radar cross sections can be obtained.

通过矩阵方程的求解和球B(来源：e3ABC论文网www.abclunwen.com)essel函数的大宗量渐进表达式，我们给出了各向异性单轴介质球结构对平面波电磁散射的数值计算结果，并和其他的数值计算结果进行了比较，其结果正如我们所预料的一样，达到了预期的结果。

Based on the method, a new way to deal with the randomicity of boundary condition is advanced and implemented in statical analysis.

此外，基于这一方法，提出了一种对边界条件随机性处理的方法，并在静力学问题分析中予以实现。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。