数值方法

Three numerical approaches to the classification of Chinese species of genus Abelia.

三种数值方法在几种六道木分类中的应用。

The three-dimensional viscous calculation makes the total and part study of the complex flow in turbomachinery possible, and it provide a reliable numerical improvement method the aerodynamical components design.

可以从整体和局部研究叶轮机械内复杂流场的流动现象，为改善和提高其气动部件的设计提供了可靠的数值方法。

This paper deals with the numerical methods for transonic flows around airfoil and wing, and its applications.

本论文研究翼型和机翼跨音速定常流的数值方法及其应用方面的问题，主要的工作是

The system of differential equations for a geodesic line on an algebraic surface was discredited into a nonlinear system. Then it was solved numerically based on iterative methods.

在算法中，把决定代数曲面测地线的微分方程组离散为一个非线性方程组，然后采用迭代数值方法求解。

A numerical method used to calculate the temperature field in PD3 steel and to analogize the process of heat treatment has been presented, and the relative software has been developed.

提出了PD3钢温度场计算及热处理过程模拟的数值方法，开发了相关的软件。

Spacecraft attitude dynamics and the analytic and numerical methods for studying chaotic motion in engineering systems are respectively surveyed.

概述了航天器姿态动力学的研究内容和研究工程系统中混沌运动常用的解析和数值方法。

A numeric method of calculating invariant probability distribution for chaotic map is derived. The method is particularly useful for some realistic experimental systems whose transfer probability matrixes are easy to be determined.

提出一种计算混沌映射不变分布的数值方法，该方法特别适合于求解从实验中获得的样本数少，但转移概率易于确定的实际混沌系统的不变分布。

The results of this method agree well with the theory data. On the same time, the present method costs much less than numerical methods. In a whole, it is applicable to the parametric design for the heat shield of projectile.

采用这种方法计算出的表面热流、温度与理论值吻合较好，而计算效率又远远高于纯数值方法，适合于弹头防热方案的初步设计阶段。

I selected a typical section to make a series of study, got the deformation trend and evolution regulation of subgrade from model experiment after the coal was mined which lie concealed in the subgrade, made evaluation with ration about influence of mining under subgrade using FLAC soft such as confirming the "ARC-BED"slide model and slip scope, calculated the F.S. of subgrade slope used limit equilibrium theory, and advance particular measure for the PingShuo Coal Mining Company.The engineer analyse of subgrade stability caused by karst cavity was relied on a collapse accident happened in ChangJin expressway.

文中先对所选取的代表性断面进行了模型试验，从直观上得到煤层开采后上部路基工程变形趋势及其发展规律；然后运用数值方法，定量评价了采动对路基及边坡的影响作，确定了路基边坡发生破坏的&圆弧—顺层&模式及范围，并运用极限平衡方法对边坡的安全性作出了评价，最后提出了具体的处治建议，为保证道路的正常营运与矿区安全生产提供了科学依据。

In the numerical method has many extrapolation algorithms, the Romberg squaring algorithm is one kind of commonly used extrapolation algorithm, it is one kind of sector divides in half the accelerating convergence method gradually.

数值方法中有许多外推算法，龙贝格求积算法是一种常用的外推算法，它是一种区间逐次分半的加速收敛方法。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。