查询词典 mathematical model

The mathematical model was verified in experiment with the method of indirect squeeze cast Archimedean spiral proof sample. And the experimental results show that the maximum deviation between the theoretical value and measured value is less than 8%. This model can be used for quantitative analysis and estimating effects of the craft factors on the filling ability, and can also predict the maximum filling length. It has the important reference value to design the semi-solid alloy rheoforming technology and mould.

采用间接挤压铸造阿基米德螺旋线试样的方法对该数学模型进行了实验验证，实验结果表明：理论计算值与实验测定值之间的最大偏差小于8%；该数学模型可以定量分析和估算工艺因素对充型能力的影响，并可预测充型极限长度，这对半固态合金流变成形工艺设计和模具设计都有参考价值。

The mathematical methods which are usually used to predict the athletic sports are the model of regression and grey model.

在体育理论的研究中，往往是利用回归模型或灰色模型对运动成绩进行预测。

This paper, firstly, after a deep study of image mathematical models, sets up two kinds of image models namely Laplace partial differential equation model and biharmonic equation model and then obtains the eigenvectors of image by the methods of eigenfunction expansion and boundary recurrence.

本文首先较深入地研究了图象的数学描述，提出图象的Laplace偏微分方程和双调和方程两种模型，继而采用特征函数展开法和边界递推法分别求得图象的特征矢量。

Bilinear transformation was adopted to discrete the mathematic model of the whole simulation system. Considered that LabVIEW was a novel graphic computer language, the practical realization of mathematical model in LabVIEW was presented.

首先采用频率预曲折双线性变换法将控制系统的数学模型离散化；然后在LabVIEW中进行图形化编程，从而实现了基于虚拟仪器的汽轮机系统的仿真。

This model can be used to determine the proper angle and position of lance. In Chapter Five, based on characteristics of Pulverized coal combustion in blast furnace, the mathematical model in the blowpipe and the raceway, including coal movement, devolatilization and combustion, was put forward.

为消除对高炉风口磨损，本章结合高炉喷吹煤粉特点，发展了一个能全面考虑气固两相流煤粉燃烧和煤粉颗粒轨迹的三维计算程序，并对所采用的理论进行了详细介绍。

On the basis of slip-diffusion model of multiphase flow, a three-dimensional mathematical model of gas-particle flow in blowpipe has been developed and debugged to calculate the gas-solid two phases flow, including gas velocity and particle velocity inside the blowpipe.

运用多相流的拟流体模型建立了高炉局部富氧喷煤直吹管内气粉两相流动的数学模型，对气粉两相流场进行了数值研究，探讨了气相和煤粉的速度分布规律及其影响因素，其中包括氧-煤喷枪的结构、漩流数和富氧率等。

An analysis of mathematical model of air distribution plate resistance was carried out for model HG CFB35 3.82/450 1 CFB boiler with the said plate resistance being test.

分析了循环流化床锅炉布风板阻力的数学模型，并对HG－CFB35－3.82／450－1型锅炉布风板阻力进行了测试。

In this research a new mathematical model - cubic polynom with two given derivatives at end points - was proposed which can good match the S-shpae curve.This model has a number of analytical features:describing the geographic phinomena prosesses in three hierarchies (textural fractal,structural fractal and state fractal); the boundary values of the structural fractal can be considered as the boundary values of interval of scaleless.

在研究中提出了扩展分维表达函数：带导数三次多项式，它能很好地表达反S形分布曲线，具有一系列解析特征：可从三个层次（纹理分形、结构分形和态势分形）上描述地理现象或过程；其中结构分形的边界可近似地看作是非扩展分维无标度区的上下界。

The proof primarily makes use of brouwer fixed point theorem and mathematical economicsThe second part of paper discuss the traffic volume change model of freeway.the change rate model on the freeway is key that we establish tollstandard.

证明主要运用的是布劳威尔不动点定理和数理经济学理论。论文第二部分主要是讨论高速公路的交通量转移率模型，高速公路上的实际交通量是我们制定收费标准的关键。

We have developed a three dimensional (3D) compositional mathematical model for two phase flow and derived a new 3D streamline model with capillarity and gravity effects.

在建立起可动凝胶深部调驱的油水两相多组分数学模型的基础上，推导出了考虑重力和毛管力的三维流线模型，将求解饱和度的三维问题转化为一维问题。

I want to be a big fish in a small pond.

我要做一条在小池塘里的大鱼。

While the software functioned well, we did not feel the same about their customer support!

虽然该软件运行良好，我们没有同样的感觉他们的客户支持！