查询词典 numerical analysis

Based on an analysis of the mechanism of flow pattern alternation, approximate criterion for flow pattern alternation was formulated, and a numerical model was worked out for simulation of free overfall and submerged overfall alternation by combination of the above two models.

分析两种不同水流形态的交替机理，建立两种水流的转换条件，联立两种不同形态的数学模型构成保水堰的堰流和满流交替的非恒定流数学模型。

Compare the latter numerical value with the anterior ones and use SPSS 10.0 software package to carry through X2 test, analysis of variance and paired t-test for dependent samples.

进行数值前后比较，对所有的数据运用SPSS10.0统计软件包进行X~2检验、方差分析及配对t检验等统计学处理。

Compared with the traditional numerical method,the periodic orbit extracted by the analytic approach is more accurate,requires smaller memory size and is more applicable in real time systems;Furthermore,it is more suitable for stable analysis and control of the systems.

与传统的数值提取法相比，所提出的解析法具有提取的周期轨道精确度高、周期轨道信息的存储量小、便于实时应用、易于进行稳定性分析和控制等优点。

The work in this thesis could be concluded into four parts: 1. Theoretical analysis and numerical simulation are finished among three type of piecewise smooth rub models which include dual-linear rigid model, Hertz model and nominal rigid model.

本论文的主要工作分成以下四部分：第一部分：对三种分段光滑碰摩模型，即双线性刚度模型、Hertz模型和当量刚度模型进行了理论分析和数值仿真对比，确定了Hertz模型的优势地位。

Destructive earthquake ; poison gas leakage and diffusion ; numerical simulation ; analysis of parameters

破坏性地震；毒气泄漏与扩散；数值模拟；参数分析

For the analysis of both static and dynamic characteristics, the additional moments, axial/radial coupled stiffness coefficients and the radial/radial coupled stiffness coefficients are taken into account Based on it, the influences of the bearing angle, the ratio of width to diameter, and the ration of magnetic polar angle on the static and dynamic characteristics conical magnetic bearing are analyzed, and the corresponding numerical results are presented.

在圆锥电磁轴承基础解的计算模型中，增加了轴承附加力矩、力矩刚度系数以及轴向/径向、径向/径向耦合刚度系数的计算。在此基础上，本文详细讨论了圆锥电磁轴承锥角、宽径比以及磁极角比对轴承静、动特性的影响，并给出了数值结果。

Thirdly, the principal curve and polygonal line algorithm are introduced, and an implementation of polygonal line algorithm based on Quasi-Newton numerical optimization is illustrated. The simulation results show that when this algorithm isused in the detection of curvilinear defects on wafer map, it can converge fast, compute accurately and meet the demand of application of defects pattern analysis, and with the number of line segment increasing, the polygonal line will approximate to the Kegl principal curve.

研究了主曲线、多边形线算法，提出用多边形算法识别弧状缺陷想法，讨论了用拟牛顿法实现该算法的解决方案，针对硅片缺点模式分析中常出现的弧状缺陷，采用该算法进行检测分析，实验结果表明这种算法快速准确，当线段个数或最小距离平方期望值达到一定门限值后，多边形线就已经能够描述弧状缺点集的形状，随着线段个数增加，最小距离平方期望值还在不断下降，最终会收敛到Kegl主曲线。

A polyphase flow numerical analog analysis has been made of the high pressure jet flow field, by way of CFD.

利用计算流体动力学方法对高压水射流流场进行了多相流的数值模拟分析。

Synthetical analysis: The preciseness and reliability of the design method can be validated by comparing numerical calculation and experiment.

综合分析：比较计算结果和实验测试结果，验证了梯形迷宫螺旋泵设计方法的正确性、合理性。

Synthetical analysis: The preciseness and reliability of the design method can bevalidated by comparing numerical calculation and experiment.

综合分析：比较计算结果和实验测试结果，验证了梯形迷宫螺旋泵设计方法的正确性、合理性。

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。