求值

The numerical calculation commonly used for the Delphi process more than 100, including solutions of linear algebraic equations, interpolation, numerical integration, special, function approximation, eigenvalue problems, data fitting equation Root and solve nonlinear equations, functions and the extreme optimization, statistical data description, Fourier transform spectra, solution of ordinary differential equations reconciliation partial differential equations.

本书共有数值计算中常用的Delphi子过程100多个，内容包括解线性代数方程组、插值、数值积分、特殊函数、函数逼近、特征值问题、数据拟合、方程求根和非线性方程组求解、函数的极值和最优化、数据的统计描述、傅里叶变换谱方法、解常微分方程组和解偏微分方程组。

The digital speciemen image of adult Helicoverpa armigera Hubner was acquired using a digital camera in an image acquisition environment.Several methods of image enhancement were covered, including linear smoothing, median filtering, linear greylevel transformation, contrast stretching, image inversing and histogram equalization. Results demonstrated that these methods evidently enhanced the speciemen image of H.

digital image ；本研究以棉铃虫成虫标本作为数字图像源，设计了图像获取环境，以数码相机做为数字图像获取设备获得了棉铃虫成虫的数字图像，介绍了昆虫数字图像增强的方法，包括图像的线性平滑、中值滤波平滑、线性灰度变换、对比度拉伸、图像求反以及直方图均衡化等增强方法，证明这些方法对棉铃虫图像具有明显的增强作用。

The sum of two positive integers is 29, find the minimum value of the sum of their squares.

两个正整数之和为29，求此两数平方和的最小值。

Regular tessellation is formed by identical regular m-polygons for some fixed m . Find the sum of all

用相同的正 m 边形能密铺平面，求所有可能 m 值的总和。

Using this method, the thermal analysis of air-core reactor is performed without specifying the convection coefficients at its development stage. Therefore, the experimental cost of air-core reactor is decreased and the design period is shortened.

建立了空心电抗器磁场、电路、流场和温度场耦合计算的有限元模型，将磁场-电路计算得到的焦耳热作为流场和温度场计算中的热源，从而求出了空心电抗器的稳态和暂态温度场分布及最高温度值。

The factors include the retarded time of torpedo engine starting, torpedo velocity at tube outlet, confined elevator angle and ship rolling angle. Similarity variables were defined for the four factors and values of the variables were determined through combination of experimental data and simulation results.

在舰艇鱼雷发射初期弹道建模与仿真研究中，重点研究鱼雷发动机启动延迟时间、鱼雷出管速度、管制舵角、舰艇横摇角对初期弹道的影响，将该四项因素作为相似元，再根据实航试验数据的袋深与仿真计算结果的袋深求出相似元的值。

The calculations of torsional vibration of crankshaft systems of 12V240ZJ6E diesel engines were carried out with TVCA programme and I deas software to obtain system natural vibration frequencies, vibration amplitudes of various concentric masses at different rotational speeds, and torques and torsional stress es of various crankshaft sections at different rotational speeds.

运用TVCA程序和Ⅰ deas软件对 12V2 4 0ZJ6E型柴油机轴系的扭转振动进行计算，求出系统的自振频率、各集中质量在不同转速下的振幅和各轴段在不同转速下的扭矩、扭转应力值，对自振频率、自由端振幅和扭转应力最大轴段进行了分析，对轴系的扭转振动情况作出总结与评

when computing the next tracing point, the traditional tracing method generally used the iterative method. but the iterative method had to face the following problems.

摘 要：传统的跟踪方法在求下一个跟踪点时一般是采用迭代法，而迭代法会出现初始值的选取和迭代收敛的问题。

The constructing process of the algorithms itself indicate that they are brevity and have definite geometric meaning, scientific iterative terminal criterions and no strict requirement to function. Finally, some digital experimentation is presented to indicate the algorithms application in solving the problem of maximum of function, transcendental equation,integer programming and so on. The results indicate that the algorithms have more global and more adaptability compared to traditional algorithms and have more calculating efficiency and more scientific iterative terminal criterions compared to some present popular artificial intelligence algorithms.

算法的构造过程本身表明了该算法简单明了、几何意义明确、迭代终止准则科学、对函数的要求较低；最后举了几个数值试验的例子以说明该类算法在求函数的最值，解超越方程以及整数规划等问题中的应用；数值试验的结果标明该算法比单纯由"微分"思想演化而来的传统算法有更好的全局性和对问题的更广泛的适应性，比现在流行的一些人工智能方法有更高的运算效率和更适当的迭代中止准则。

Through the analysis, to make use of the trapezoid method and Simpson's method to obtain the radiant emittance value of blackbody within a limited region conveniently.

通过分析可知，利用梯形法和辛普森法能够方便地求出黑体在有界域内的辐射出射度值。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。