差分方程

The Fourier method and heuristic stability theory for the analysis of the computational stability criterion of the difference scheme of linear partial differential equation are also briefly introduced.

对分析线性偏微分方程差分格式计算稳定性判据的Fourier方法、启发性稳定性分析方法，也做了简要的介绍。

To discuss deeply, this article use indirect means to research by difference differential equation, that is: using the Liyapnof function to discuss the time delay stability of one-dimensionality force telepresence system in order to determine the time delay limits which could ensue the system work normal.

为了进一步深入讨论，本文还从差分微分方程入手，采用间接法进行进一步讨论，即：利用李亚普诺夫函数对一维力觉临场感系统的时延稳定性进行讨论，确定保障系统正常工作的时延界限。

Differential coefficient and difference simulation equation of gray model GM (1, 2), representing the relationship between 28d compressive strength and 4-32μ m particle content respectively is

颗粒粒级范围对强度的灰色系统关联度分析结果表明：对于普通硅酸盐水泥，4-8μm颗粒含量对水泥3d抗压强度的影响最大，8-16μm颗粒含量对水泥28d抗压强度的影响最大，对水泥90d抗压强度，则16-24μm颗粒的影响最大。28d抗压强度与4-32μm颗粒含量灰色模型GM（1，2）的微分方程和差分模拟式分别为

There are four methods which are used to study the stability of difference method of the development equation.

摘要本论文主要是对发展方程差分方法的稳定性进行讨论。

Roadway boundary condition has a good applicability and stability in difference calculation of diffusion equation.

巷道边界条件适用于扩散方程的差分计算并具有很好的稳定性。

The high - order difference method of wave equation has the advantages of high accuracy and small numerical dispersion.

波动方程高阶差分法具有精度高、数值频散小的优点。

Both finite element method and discrete operator difference method can be pushed forward from which.

由该方程不仅可以得到有限元法，还可得到离散算子差分法。

When discrete characteristic of digital images is considered, finite difference approximates differential operator.

考虑数字图像离散化特征，用有限差分近似微分运算，将由PDE描述的反射图方程转化为关于未知高度的代数方程，然后使用迭代算法求解，得到新的SFS算法。

The compact difference scheme for two dimensional Boussinesq equation is given on a staggered grid.

在交错网格上构造了求解非线性Boussinesq方程的紧致差分格式，此格式可以在只用到三个网格结点的情况下，达到空间四阶精度。

The model Boltzmann equation s, which are derived from the transformations of reduced distribution function and discrete velocity ordinate together, are solved through using an implicit flux-corrected second-order upwind TVD scheme.

模型 Boltzmann方程先后经简化分布函数和离散速度坐标变换后，采用一个隐式通量修正二阶迎风TVD格式差分求解。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。