近似解

平行平板间径向气流的Navier-Stokes方程的新的近似解

A New Approximate Solution of the Navier-Stokes Equation for the Radial Gas Flow Between Two Parallel Flat Planes

将其能动张量与宇宙弦（核外）的能动张量叠加，求出了中微子场背景下整体宇宙弦为源的Einstein方程的线性近似解。

Adding this tension to that of a global cosmic string outside the core , solves the linear approximate solution of Einstein equation with a global cosmic string as source and with neutrino field as background .

一类具有转向点问题的n阶近似解

The N-order Approximate Solution for a Class of Problem with Tourn Point

基于Rough集的牛顿迭代法求方程近似解算法

Algorithm of seeking approximate roots based on rough set and Newton interative method for equation

核属于H函数类的多维积分方程近似解直接方法的优化

On Optimization of Direct Methods for the Approximate Solution of Multidimensional Fredholm Integral Equations with Kernels in H Class

用Gauss原理求非线性振动微分方程的近似解

Approximate Solution of Nonlinear Vibration Differential Equations by Gauss 's Principle

加权残数法用于侧向力作用下开有n排孔列的剪力墙的近似解

The application of the method of weighted residuals to the Stress-Analysis of the shear walls with N-ROWS of openings subjected to lateral loads

两组工件的P‖C（max）问题的近似解的随机改进算法

A Random Improvement Algorithm for the Approximate Solution of the Problem P / C_ ( max ) with Two Groups of Jobs

用有限元法近似解Stokes方程

Approximate solution of Stokes equation by the finite element method

J积分全塑性近似解及其在紧凑拉伸试样上的应用

An Approximate Analytic Expression of J-integral for Fully Plastic Problems and Its Application to Compact Specimen

这些问题都属于NP完全问题，往往都需要用只能得到近似解的启发式方法来解决。

Those problem are NP-complete , which are typically resolve with heuristic algorithms and the solution is approximate .

定义了基脉冲概念，给出了二维散射系统对于基脉冲入射时的时域Born近似解，并指明了与前者的关系。

The basic impulse is introduced in this paper and the corresponding time domain Born approxiation is studied , Then the relation between these solutions is given .

约束Steiner最小树问题的近似解

An Approximation Solution of the Constrained Steiner Minimum Tree Problem

广义Boussinesq方程的同伦映射近似解

Approximate solution of homotopic mapping for generalized Boussinesq equation

在三维弹性波散射问题的Born近似解基础上，进一步分析了在纵波入射条件下二维散射问题的Born近似解，对铝质长杆中的椭圆形空穴缺陷的散射场情况进行了对比分析；

According to the Born approximation solution of the scattering of three-dimensional elastic waves , the scattering from an ellipse void in a long Al rod is analyzed comparatively .

非线性Duffing方程的高精度近似解

Higher accuracy solution of nonlinear Duffing equation

单个守恒律Riemann问题近似解的边界层分析

The Analysis for the Boundary Layer of Approximation Solution for the Riemann Problem of Scalar Conservation Laws

三维Ising模型的封闭近似解（Ⅳ）&配分函数的近似内插公式

Closed-form approximation for the 3-dimensional Ising model (ⅳ) the approximate interpolation formula for the partition function

从这样的近似解得出的Reynolds剪应力是和平均流速的坐标梯度成正此。

From this approximate solution the shearing component of the Reynolds stress is found to be directly proportional to the gradient of mean velocity .

并通过实例计算，比较了这种方法得出的解与Bessel方法一级近似解之间的误差。

The error between the solutions of this method and Bessel 's method is derived through numerical examples .

基于Laval喷管的圆管爆轰驱动近似解

The approximate solution of pipe driven by detonation based on the theory of De Laval nozzle

表明在We≤0.7时，用二阶近似解可代替高阶近似解计算，不会造成很大的误差，但可大大缩短计算时间。

When We < 0.7 , we can adopt the second order approximate solution instead of the high order numerical solution to minimize the calculation and without the risk of producing a untolerable error .

Green-Ampt模型入渗率显式近似解研究

Approximate Explicit Solution to Infiltration Rate of Green-Ampt Infiltration Formula

在二维弹性波散射领域Born近似解的基础上，通过Fourier变换，推导了基脉冲入射二维散射系统时，散射场的时域Born近似解。

On the basis of the frequency domain Born approximation theory of the scattering of two dimensional waves , the time domain Born approximation solution to the scattering of basic impulse function if derived by Fourier transform .

对于FIR信道给出的是一种普适的方法，而对于带限FIR信道，考虑到在频域方法固有的不足之处，提出了一种近似解方法。

For the FIR channel is a universal given way , and for band-limited FIR channel , taking into account inherent in the frequency domain method deficiencies , proposed an approximate solution method .

与Walter给出的近似解比较，数值解能更准地确定管状电热元件的壁温。

As compared to the approximate solution produced by Walter , still more accurate wall temperature of the electric heating element can be determined by the numerical solution .

讨论在地震记录反演问题中被广泛采用的MA（q）模型的参数极大似然估计，并采用最陡下降法来求其近似解。

MA ( q ) model is widely exploited to model the seismic records . The maximum likelihood estimation of such model is discussed , and an approximate solution is obtained by using the steepest descent method .

（CX3）2Y型分子内旋转能谱的微扰近似解

Perturbation Evaluation of the Energies of the Internal Rotation in the ( CX_3 ) _2 Y Type Molecules

异构无线网络中取得max-min公平带宽分配是一个NP-hard问题，设计了多项式时间算法来获得次优的近似解。

The max-min bandwidth fairness allocation in HWNs is NP-hard problem , so an approximation algorithm of polynomial-time is designed to obtain suboptimal result .

选取Lagrange乘子，再用广义变分迭代方法得到了孤波的任意次精度的近似解。

Next , its Lagrange operator is selected ; and then , using the generalized variational iteration method , the approximate solution of arbitrary degree of accuracy for the solitary wave is obtained .