查询词典 third boundary condition

The nodal Green's function methods based on the Neumann boundary condition (the second kind boundary condition) in Cartesian geometry is developed and evaluated in this thesis.

本论文发展了Neumann边界条件格林函数节块法NNGFM，并根据先进的组件均匀化技术-广义等效均匀化理论〓引入不连续因子，消除组件均匀化带来的误差，大大提高计算精度。

In order to imitate the unbounded space wave propagation,the non local boundary condition is used as the absorption boundary condition to cut off the computation domain,and the problems of plane wave incidence at different angles are calculated with the high order PE algorithm.

文章通过引入Padé逼近构造高阶抛物线方程算法，用非局部边界条件作为吸收边界条件，截断计算区域以模拟无界空间波的传播，结合高阶PE算法分别计算不同角度平面波的入射问题。

Based on Pontryagin maximum principle, the lunar soft landing problem is transformed into a two-point boundary value problem in mathematics. In consideration of the bound condition and transversality condition, the resulted two-point boundary value problem is converted into a parameter optimization problem aiming at the initial values of conjugate variables and the terminal time, then it is solved by the nonlinear programming.

首先，从庞德里亚金极大值原理出发，将有限推力作用下月球软着陆问题转化为数学上的两点边值问题；在考虑边界条件及横截条件的前提下，将该两点边值问题转化为针对共轭变量初值和末时刻的优化问题；然后应用非线性规划方法求解所形成的参数优化问题。

Comparing with the results of the relative slipping boundary condition and the boundary condition related to constitutive...

结合相对滑移边界条件及与本构关系相联系的滑移边界条件进行对比分析，得到了不同滑移参数间的解析关系式。

The governing equation is the mild-slope equation. Finite element method has advantage to treat complicated boundary. The second order radiation boundary condition is expanded to improve the wave model for large incident wave angles. The validity of the second order radiation condition is examined through varying arbitrary wave incident angles.

模式将以包含波浪绕射及反射之缓坡方程式建立数值模式，利用有限元素法易於处理不规则边界的优点，引用二阶近似辐射边界条件，扩展波场模式处理大角度波浪入射的能力，探讨在未碎波的情形下，二阶辐射边界条件对於任意角度波浪入射之适用情形。

Based on the current continuity equation, using spherical harmonic function expansion, where lower boundary condition is the surface atmospheric electric potential, upper boundary condition is the electric potential of the bottom of the ionosphere, and non-homogeneous current source function of the vertical dipole assumptions is used for the charging of thunderstorms, the state analytical solution of global atmospheric electricity model in lower atmosphere is gotten.

本文从电流连续方程出发，采用球谐函数展开法，边界条件采用下边界为地表大气电势，上边界为电离层底部电势，非齐次电流源函数项采用垂直偶极子假设。

The internal boundary condition can be used to compute thin slab control rod worth in thermal research reactor. Internal boundary condition has been used to compute the control rod worth in JAERI's JRR-3M, and the results are compared with ones of JAERI.

对通过採用能量相关的內边界条件，在扩散理论的范围內计算薄板型热中子研究堆控制棒价值进行了理论分析，成功地计算了日本原子能研究所JRR-3M的控制棒价值，並与日本的计算结果进行了对比。

As a limited domain is concerned, since the boundary condition limits the uniqueness of the solution of stream function, velocity potential and the partition of wind field, it is important to reduce or eliminate the effect of boundary condition uncertainty.

所以减小或消除边界的不确定对结果的影响是有限区域流函数和速度势计算及风场分解最重要的问题。

The use of an efficient adaptive absorbing boundary condition, which is concluded from Z transform absorbing boundary condition, further improved the accuracy of the calculated propagation constants.

基于大量精确的计算结果，本文总结出了一些实用的设计曲线和两个计算基片集成波导传播常数的经验公式。

The cases with temperature boundary condition and heat flux boundary condition are discussed, and the results prove that this model can be applied to the analysis of radiation heat transfer between the pressure tube and calandria tube.

计算结果表明，该模型可以用于TACR压力管和排管间辐射换热能力的计算。

This matter overthrew all basises I learned from Sunday school .

这件事把我从周日学校学到的所有道理都颠覆了。

It's one of the cruel ironies of aging: if you want to remember your favorite restaurants, the less you should eat at them.

这是一个老化的残酷讽刺：如果你想记住你最喜欢的餐馆，你应该更少吃到它们。