数值的

As a fast TDIE solver with high accuracy and efficiency, plane wave time domain algorithm is studied deeply in this thesis. The implementations of two-level and multilevel PWTD-enhanced MOT schemes are described and the numerical efficiency is presented.

论文还深入研究了一种高精度、高效率的TDIE加速算法——时域平面波算法的理论基础、数值实现的关键技术，以及两层、多层PWTD加速MOT的实现方案、程序流程以及数值性能。

Based on our own simulation results and results of some numerical simulation of single Fold structure by other investigators in recent years, the factors that affect single fold shapes and the variation of maximum principal stress and horizontal strain during the deformation of single fold are discussed in this paper.

本文结合近年来单层褶皱构造数值模拟研究进展，以及笔者近几年来对单层褶皱所进行的数值模拟实验研究，主要论述了单层褶皱变形的影响因素，单层褶皱变形过程中的最大主应力与水平应变的变化及其影响因素等。

The premise is in detecting errors while trying to convert a numeric string to a proper representation of its value.

这里的问题是把一个用字符串表示的数值转换为正确的数值表示形式，而且在过程中要检测并处理可能的错误。

On the basis of analyzing pump-jet propulsor, inside flow fields are numerically simulated by using the software FLUENT, on the condition of setting up the physical models and the mathematic models and determining the boundary conditions.

在分析泵喷射推进器的基础上，建立了其数值仿真的物理模型和数学模型，确定了求解的边界条件，利用CFD软件FLUENT对泵喷射推进器的内流场进行了数值仿真。

The principles and methods of present tangent method and secant method are also described in the paper.

全压力史拟合方法的理论模型是：地层均质、等厚、无限大，充满弱可压缩流体，考虑井筒中存在表皮效应和井筒存储的影响 3、通过使用有限元法对脉冲试井过程进行了数值分析计算，得到了脉冲试井的不同条件下的理论曲线，提出了脉冲试井数值分析方法。

C Taking the short-fiber reinforced and inhomogeneity spreaded composite materials as engineering background, singular integal equations of plane problem of interaction between line inclusion and circular inclusion are deduced, and some particular cases are analysed.

以短纤维和颗粒弥散体复合材料为背景，导出了线夹杂与圆夹杂相互作用平面问题的奇异积分方程，并对一些特殊情形作了退化分析，建立了数值法，给出了圆夹杂和线夹杂两侧的界面应力及线夹杂端点的应力强度因子表达式，同时作了具体的数值计算。

The specific heat capacity and thermal conductivity of wall material have a remarkable effect on the north wall temperature distribution.

温室内土壤温度和气温的实验结果与数值模拟结果相符合，从而表明所建立的传热模型和数值计算结果是正确的与可靠的。

On the basis of the model, the friction force in each meshing point on the spiral bevel gear surface covered by silver film is presented by numerical method. In addition, the result is indirectly proved by experiment.

用数值法求解了弧齿锥齿轮镀银齿面之间各啮合点处的摩擦系数；以试验方法对数学模型的正确性进行了间接验证；通过详尽的数值计算探讨了银层厚度、刀盘直径、基体硬度等参数对摩擦系数的影响。

Detailed work have done at four aspects as follows: the usage of SPIV in multistage turbomachinery; the study of compressor rotor tip complex flow with SPIV; the study of compressor stator tip complex flow with Rotor/Stator interaction and the detailed analysis and comparison of the unsteady flow field respectively obtained by CFD and experiment investigation.

详细本文主要以SPIV非定常实验测量和CFD非定常数值模拟为工具，研究叶轮机端壁复杂流动的一些机理性问题，围绕四个方面开展了叶轮机端壁非定常流动方面的研究工作：适用于多级叶轮机械使用的SPIV技术；压气机转子尖区复杂流动；动静叶干扰条件下压气机静子内尖区非定常流动；以及非定常数值模拟结果与非定常实验测量结果的对比。

The Jacobi matrix rank one update problems, given either their mix-type eigenpairs or their pricinpal submatrix and defective eigenpairs(the eigenvalues of the matrix and some elements of the corresponding eigenvectors) are also discussed.

n阶对称箭形矩阵与n阶Jacobi矩阵一样只有2n-1个非零元素，类似Jacobi矩阵逆特征值问题的提法，本文提出并讨论了六类对称箭形矩阵逆特征值问题，研究了这类矩阵的结构性质，得到了问题有解的充分必要条件及求解的数值算法和数值算例。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。