查询词典 dimensional equation

There are two main disadvantages in the present differential algebra equation model used in AC/DC system: one is that 'dimensional calamity' can occur with the increment of DC transmission lines

目前普遍使用的AC/DC系统的微分代数模型主要存在2大缺陷：①随着直流线路的增加可能出现"维数灾难"问题

There are two main disadvantages in the present differential algebra equation model used in AC/DC system: one is that 'dimensional calamity' can occur with the increment of DC transmission lines; another is that it is difficult to deal with the switch of DC control mode.

目前普遍使用的AC/DC系统的微分代数模型主要存在2大缺陷：①随着直流线路的增加可能出现"维数灾难"问题；②不易处理直流控制方式的切换，计算繁杂。

We apply a differential evolution algorithm to study parameter inversion of two-dimensional wave equation.

利用微分进化算法进行二维波动方程参数反演的研究。

Key words two-dimensional wave equation; parameter inversion; differential evolution algorithm; finite element

利用微分进化算法进行二维波动方程参数反演的研究。

In the second part, a method studying stochastic transition which is the master equation method is introduced, and explicit solutions of velocity V and diffusion constant D of the steady state are obtained when a particle hops among a dimensional and periodic N states.

第二部分介绍了一种研究随机跃迁的方法—主方程方法，着重推导了粒子做一维周期性N态随机跃迁时达到稳态的速度、扩散系数的一般表达式。

According to the theory of flow diffusion and convection, three-dimensional state equation of radon field is established for constant and variable diffusion coefficient and convection rate. The numerical solutions for different coefficient and different boundary conditions are obtained for two models of radon field which have respectively source in the side and inside of collapse column.

根据流体场的扩散理论和对流理论，建立了扩散系数与对流速度为常量或变量情况下的氡气场三维状态方程；对於陷落柱柱体侧面有源氡气场和柱体体内有源氡气场两种理论模型，给出了不同系数和边界条件下的数值解的形式。

The equation is solved by the dimensional analysis method, and the expression of gas leakage concentration in soil is deducted.

通过量纲分析的方法对扩散方程求解，得到了燃气在土壤中的泄漏扩散浓度表达式，通过实例计算分析得出了燃气在土壤中的泄漏扩散规律。

The theory of parabolic equation was presented,and was applied to the scattering analysis of two dimensional perfectly electric conducting objects.

对抛物线方程算法的基本原理进行了详细论述，并将其运用到二维导体目标的电磁散射特性分析中。

In Chapter three, we mainly discuss the numerical method of the one dimensional nonlinear Schr〓dinger equation

在第二章中，主要结果是讨论了一维非线性薛定谔方程的保结构离散化方法，采用谱方法给出了此方程的全离散计算格式。

By using dimensional analysis,a calculation equation of dense phase density correlated by dimensionless groups is obtained.

湍流床密相密度作为流化床设计的一个重要参数，已引起许多研究者和工程设计人员的关注。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新