查询词典 numerical method

A 2-D coupled numerical model, which is the combination Boussinesq equations solved by finite difference method with Laplace equation solved by boundary element method, is established.

Boussinesq方程与Laplace方程耦合计算模型：1 建立了外域用有限差分法求解Boussinesq方程、内域用边界元法求解Laplace方程的二维耦合计算模型。

This course will introduction two numerical methods on fluid mechanics mainly: finite difference method and finite cell method.

本课程重点介绍流体力学的两大数值方法：有限差分法和有限单元法。

Having considered the effect of wave number setting on the numerical calculation result, the cubic spline interpolation method has been used to infill data in the wave number domain. An inverse Fourier transform realized by Gaussian integral method converts the K domain solutions to electromagnetic fields in real space.

针对波数域中波数取值对模拟结果的影响，采用三次样条插值加密波数域数据，用高斯积分实现Fourier逆变换将波数域解变换为空间域电磁场。

In the second part,we have mainly discussed the error es-timates of the numerical methods for solving ill-posed problem,including the error estimate of finite-dimensional regulariza-tion method in Chapter 5,and the error estimate of regulariza-tion-spline method for solving Fredholm integral equation ofthe first kind.

在第二部分，我们主要讨论了不适定问题数值方法的误差估计，包括有限维正则化方法求解不适定问题的误差估计以及用样条正则化方法求解第一类Fredholm积分方程的误差估计，两者均是目前还未有的结果。

Based on matrix disterbance theory, a new numerical calculation method to determine system observability of each state through system observability matrix sin gular value decomposition is proposed. This method is applied in flight trans fer alignment and integrated navigation filter design successfully.

提出了应用系统观测矩阵奇异值分解确定滤波器中各状态变量可观性强弱的一种方法，并在系统的飞行传递对准和组合导航滤波器的设计中得到了成功的应用。

Through the error analysis of eonventional interpolating method by point-to point comparison as generally used in numerical control of machine tools, the paper introducs a half-step deviation interpolating method in which both the speed and deviation conditions are considered.

本文通过对机床数控中逐点比较法等常用插补方法的误差分析，提出了一种既考虑速度条件，同时又考虑偏差条件的插补方法──半步偏差法。

Numerical simulation proves that the proposed method is more accurate than conventional harmonic analysis method.

数值模拟试验表明，在适当选取点质量埋深度的情况下，本文的点质量调和分析方法较传统的调和分析方法精度更高。

A quick and correct forecast of tidal current when oil spill occurs is a key step in the forecast of oil spill. Based on the harmonic constant of tidal component of M2, S2, O1 and K1 in Lingshan Island, Laoshantou and Chaolian Island, and by using harmonic method, the thesis first conducts a current forecast in a single point, and then builds up a current field forecast in Jiaozhou Bay and its adjacent seas. The computed results match well with the actual situation. The method reduces greatly the time of real time current forecast by not using numerical stimulation, so it fit to the two requirements of quickness and correctness in oil spill forecast system.

迅速准确地预测出溢油发生时的潮流情况是溢油环境预测的根本保证，因此文中根据灵山岛、崂山头和朝连岛三处M2、S2，、O1和K1四个主要分潮的调和常数资料，采用调和的方法进行单点的潮流预报，进而建立了胶州湾及邻近海域的预报潮流场；该方法的潮流预报结果与实际情况吻合良好，且因避开了数值计算过程而大大减少了流场实时预报的机时，符合溢油应急预报系统所要求的准确与快速。

The paper approaches the inapplicability of analysis method to the two above-mentioned mathematical models by using dispersed demoted numerical virtue method.

针对两个数学模型难以用解析法求解的情况，采用离散化数值求解方法进行。

In this paper,the compatibility test and consistence test are compared,the included angle cosine method for compatibility test based on priority vectors of judging matrix is put forward,and finally,the simplicity and effectiveness of the method is demonstrated with a numerical example.

对相容性检验和一致性检验进行了比较，分析了这2个指标的异同，并从判断矩阵的排序向量出发，提出了相容性检验的夹角余弦法，最后通过一个算例说明该计算方法简洁有效。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。