指出了差分公式法的局限性。
推导出常边界元情况下边界切向应力的差分公式。
The difference formulas for the boundary tangential stress are derived for the constant boundary elements.
推导出常边界单元情况下边界切向应力的差分公式。
The difference equations for the boundary tangential stress are derived in the case of constant boundary element.
利用中心差分公式计算终端参数对控制参数的敏感矩阵。
The sensitivity matrix of target parameters relative to control parameters is numerically computed using finite central difference formula.
首先，构建高阶交错网格差分公式，讨论了交错网格法的稳定性与数值频散。
First, constructed high order staggered-grid difference formulas, and discussed the stability and numerical dispersion of staggered grid method.
本文从高斯向前插值公式出发，导出了等距节点插值的EVERETT差分公式。
Starting from the Gauss forward interpolation formula, the EVERETT interpolation formula is led in the differential form.
本文导出了一维球几何定态中子输运方程菱形格式的扩散综合加速方程，并给出了差分公式。
An diffusion Synthetic acceleration equation and differencing scheme (DSA) for the diamond scheme of the one-dimensional sphere geometry steady neutron transport equation is introduced in this report.
然后，将差分公式展开，得出了直接用自变量的多项式形式表示的改进的EVERETT插值公式。
Then an improved EVERETT interpolation formula in the form of polynomial of the variable is obtained by developing the differential form.
导出了本文正交曲线坐标系下的ADI法差分公式。本文方法边界适应能力强，计算时间短，内存少。
The difference equations for ADI method with the orthogonal curvilinear coordinate are developed, which are applicable to a complex boundary.
有限差分法利用网格节点的差分公式取代控制方程中的各阶导数，然后利用迭代方法求解差分方程，该方法简单、直观且易于掌握。
FDM replace the derivative in control equation with difference formula, and then solve the equation with iterative method, which is simple, intuitionistic and easy to master.
本文用雷诺方程推导出计算轴承压力分布的差分公式；并以此为依据，计算管磨机主轴承轴瓦的压力分布；并为轴瓦的结构设计提出建议。
Using Reynolds equation to derivate the formula for calculating bearing pressure distribution, then calculate pressure distribution of main bearing shell of tube mill on the basis of this formula.
采用时间上二阶、空间上高阶近似的交错网格高阶差分公式求解三维弹性波位移-应力方程，并在计算边界处应用基于傍轴近似法得到的三维弹性波方程吸收边界条件。
Here, we use second-order, temporal - and high-order spatial finite-difference formulations with a staggered grid for discretization of the 3-d elastic wave equations of motion.
公式的建立是按文克尔理论、和差分原理进行的。
The equations are formulated according to Winkler's theory and finite difference principle.
文章还讨论了该差分构型的原理，差分响应公式和基本实验参数。
The principle of the differential configuration, the formula of differential response and the basic experimental parameters were discussed.
讨论了计算二维静电场的非正交有限差分算法，给出了数值计算公式。
A finite difference method in non orthogonal curvilinear coordinate is used for the simulation of two dimensional electrostatic field. The computational formula is derived.
根据拓扑熵的定义公式，用逆像点个数的方法找到了有限长度超稳揉序列词的拓扑熵的差分关系式。该函数关系式直接依赖于揉序列词。
According to the definition of topological entropy, a new method of calculating topological entropy is found, which directly depends on the kneading sequence or word.
在矩形网格上的九点差分近似的正确公式。使用它，在均质情况下，对拉普拉斯方程、布阿松方程和热传导方程可以构造出高阶精度的差分近似。
Under homogeneous conditions, the application of this equation may give a differential approximation of high order accuracy for Lapace equation, Poisson equation and heat conduction equation.
把此方法应用到激光雷达中来，得出了差分吸收激光雷达和拉曼雷达探测污染气体最小浓度估算公式，并把它们与已有的估算公式进行了比较，指出了原有估算公式的不足。
Using this method, minimum pollutant gas concentration formula is got by differential absorption lidar and Raman lidar, their comparison with ones in some literatures is made and shortage in...
把此方法应用到激光雷达中来，得出了差分吸收激光雷达和拉曼雷达探测污染气体最小浓度估算公式，并把它们与已有的估算公式进行了比较，指出了原有估算公式的不足。
Using this method, minimum pollutant gas concentration formula is got by differential absorption lidar and Raman lidar, their comparison with ones in some literatures is made and shortage in...
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