查询词典 numerical

This method can be used to calculate flow field with arbitrary irregular shapes. It also maintains the excellent characters of TVD scheme: high resolution, accurate solution in smooth region. Thus it is a good method in numerical simulation of compressible fluid dynamics.

本方法可用于计算具有任意不规则几何形状的流场，并且保持了TVD方法高分辨率，光滑区高精度的特点，是可压缩流体动力学数值计算中的好方法。

Numerical simulations were carried out to study the effect of reversible work and viscous dissipation on the heat transfer characteristics of compressible fluid flow in microtubes.

利用数值方法讨论了压力功和粘性耗散对微细光滑管内可压缩流动换热特性的影响，得出以下结论：微细管内 Ec沿管长是变化的，仅依据入口处的 Ec对压力功及粘性耗散的作用进行取舍是不确切的；等热流及等壁温换热条件下的计算结果显示，在入口 Ma及长径比较大时，考虑压力功及粘性耗散时得出的 N u要小于常规尺度管的理论值，在等壁温情况下，甚至出现了热流方向发生变化的情况

As the demanding of storage capacity by photographs increases sharply and numerical signal processing units become more and more cheap, effective techniques of lossy compression are generally seperated from some special hardwares and applied to table compter systems.

该文在分析了音频和视频数据同异点的基础上阐述了一种基于离散余弦变换的图像压缩方法，并给出了算法的基本步骤和一些技巧。

Neural computing strategies is clearly distinguished from both numerical and symbolic computing as a class of intelligent computable model.

为此，本文提出了一种新的基于神经网络的系统可靠性冗余优化算法。

For example, if we wanted to do some long-running numerical computation we could do this

如果我们想做一些长时间运行的数字计算，我们可以这样做

The result of numerical computation agree with that of experiment, which shows that the method is feasible.

计算结果与实验结果相符合，表明数值计算方法是合理可行的。

For this complex 3D flow field with rotation and backflow, a numerical method was established. The computative results agree with the experimental one. By comparison it is shown that they have the similar flow field shape, and their parameters have the accordant changing trend.

最后使用商业软件Fluent模拟计算了该旋转与回流并存的三维复杂流场，计算得到的流场形态和试验结果基本相似，各参数和对应的测量值具有一致的变化趋势。

In this paper, a numerical method was used to compute thewater exchange.

本文在前人工作的基础上提出了基于数值计算水交换的方法并应用于渤海湾。

Part II, the artificial boundary condition and its numerical methods based on natural boundary reduction for a hyperbolic initial boundary value problem in an infinite domain with a concave angle is investigated.

第二部分，研究一类具有凹角的无界外区域的双曲型初边值问题基于自然边界归化的人工边界条件及其数值方法。

Based on the method of numerical simulation, the diameter of steel billet, entrance half angle of concave die and the dimension of spline were analyzed for the forming force on the spline processing with the help of a rigid-plasticity finite element software Deform 3D.

借助刚塑性有限元软件Deform-3D，采用数值模拟的方法分析了矩形花键轴冷挤压过程中，坯料直径、凹模入模半角及键齿尺寸对花键成形力的影响。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。