Based on the determination of optimizing parameters and boundary equations, the cropland using structure in Fujian Province was optimized by the model of linear programming.
在确定优化参数和约束方程的基础上，借助线性规划模型进行福建省耕地利用结构优化。
In this program the voltage and current of simultaneous faults or unbalanced power system are calculated by solving the simultaneous equations of multi-port network and of the fault boundary.
本程序应用多端口网络方程和故障端口边界方程联立求解的方法，计算电力系统各种多重故障及任意不对称运行的电压和电流。
The ordinary differential equation singular boundary value problem is one of the most important branches of ordinary differential equations.
常微分方程边值问题是常微分方程理论研究中最为重要的课题之一。
The additional source term method is utilized to discretize both energy and momentum boundary conditions and the discretized governing equations in body-fitted coordinates are established.
建立了适体坐标系下的离散化控制方程组，采用附加源项法对控制方程组的能量和动量边界条件进行了离散。
The boundary problems of Raman scattering equations are analyzed and two methods of solving the boundary problem are described detailedly.
分析了拉曼散射方程的边界问题，详细的描述了两种边界问题解决方法；
The coupled boundary integral equations and their reduced forms are deduced for hybrid mode problems, and these equations are discreted into a system of linear algebraic equations by moment method.
导出了关于混合模的耦合边界积分方程组及其退化形式，并用矩量法将之离散为齐次代数方程组，从而得波导的混合模传输常数；
Flexural functions satisfy the differential equations of plate and all the boundary conditions as well as the conditions at free corner points.
挠曲函数满足板的微分方程和全部边界条件、角点条件。
Then a system of algebraic equations for the boundary values are established.
建立了边界值的一般代数方程组；
The basic equations of the boundary layer for blade surface flow of arbitrary cyclical surface are established, and the rotating effect for boundary layer separation is analyzed.
建立任意廻转面叶片表面边界层基本方程组，分析边界层分离的旋转效应。
By variational principle we obtain a system of differential equations and corresponding boundary conditions.
利用变分原理得到平衡微分方程组和相应的边界条件。
This paper presents mechanical quadrature methods for solving the boundary integral equations of nonlinear boundary value problems.
本文提出了解非线性边值问题的边界积分方程的高精度机械求积法。
It is meaningful to study solutions to closed boundary value problems for equations of mixed type, which is closely related to physical phenomena.
混合型方程的封闭边界值问题的解的研究是很有意义的，它与物理现象紧密联系在一起。
In part II, by the same way, we consider first-order impulsive differential equations with integral boundary value problems.
在第二部分中，同样的方法，我们讨论了一阶脉冲微分方程积分边值问题。
Then correspondently, we obtain the specific variational principles, bounded theorems, and boundary integral equations of the second stage problems.
再得到与之对应的各类变分原理，界限定理，第二阶段问题的边界积分方程。
Study the initial boundary value problem of semilinear pseudoparabolic equations.
研究一类半线性拟抛物方程的初边值问题。
In this paper, the exact analytic method is suggested to solve variable coefficient differential equations under arbitrary, boundary condition.
本文首次提出精确解析法，用以求解任意变系数微分方程在任意边界条件下的解。
The algebraic equation from the dual boundary integral equations(DBIE) was solved using the generalized minimum residual method(GMRES).
基于对偶边界积分方程（DBIE）构造代数方程组，采用广义极小残值迭代法（GMRES）求解。
In this paper, the initial-boundary value problem of a kind of nonlinear fourth-order wave equations with damping and source terms is studied on the base of Beam equation.
本文在梁方程的基础上研究了一类具有非线性阻尼项和力源项的四阶波动方程的初边值问题。
Finally, boundary conditions and constitutive equations which satisfy the principle of objectivity are obtained for polarizable and magnetizable thermo-elastic solids.
最后，对可极化和可磁化的热弹性体，得到了满足客观性原理的本构方程及相应的边界条件。
We present a quadrature method for mixed boundary integral equations of stable problems, which provides high accuracy and less complexity.
提出了求积法解稳态问题的混合边界积分方程，它拥有高精度，低复杂度。
By properly choosing temporal and spatial difference format, correctly dealing with source term and boundary conditions, control equations are discretized over unstructured meshes.
通过对时间和空间差分格式的选取、源项及边界条件的处理，在非结构化网格上对流场控制方程进行了离散。
The flow parameters such as discharge, free surface profile and boundary pressure distribution are simulated by numerical calculating the boundary integral equations.
通过数值求解边界积分方程组，对流量、水面线和边壁压力等水力参数进行了数值模拟。
In numerical calculation, the paper employs the collocation method to compute the coupled boundary integral equations with quadrangle constant elements.
数值计算采用配置法计算耦合的边界积分方程，使用四边形常单元。
The boundary value problem of ordinary differential equations is an important domain in differential equations.
常微分方程的边值问题是微分方程的一个重要研究领域。
First, the basic semiconductor equations with their boundary conditions are presented.
文中首先系统地介绍了半导体基本方程及其边界条件。
On the basis of the energy-variational principle, the differential equations and boundary conditions of curved box girder are derived.
利用能量变分原理，推导出平面曲线箱梁的基本微分方程、边界条件；
This paper aims at studying the boundary value for second order quasilinear elliptic equations with nonlinear boundary condition in exterior domain.
研究在外部区域中拟线性椭圆型方程，具有非线性边界条件的边值问题。
A class of initial boundary value problems for the singularly perturbed semilinear elliptic equations with nonlocal boundary conditions are considered.
本文研究了一类具有非局部边界条件的奇摄动半线性椭圆型方程边值问题。
Magnetohydrodynamics equations with periodic boundary conditions are considered in this note. The time analyticity of the solutions for the equations is proved and the backward uniqueness is obtained.
考查了周期边界条件下的磁流体方程，证明了它的解关于时间是解析的，由此得到了磁流体方程的解的向后惟一性。
Magnetohydrodynamics equations with periodic boundary conditions are considered in this note. The time analyticity of the solutions for the equations is proved and the backward uniqueness is obtained.
考查了周期边界条件下的磁流体方程，证明了它的解关于时间是解析的，由此得到了磁流体方程的解的向后惟一性。
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