查询词典 mathematical approximation

The powerful function of a new computer language MATLAB, produced by the America Mathworks company, is the mathematical software system for the calculation in science engineering. It can efficiently solve problems in science and engineering such as numerical linear hypercomplex system, digital approximation, optimization, numerical quadrature etc. It also has characters of beautiful interface and convenience for users.

MATLAB是Mathworks公司推出的适用於科学和工程计算的数学软件系统，可高效地解决数值线性代数、微分方程数值解、数值逼近、最优化、数值积分等科学和工程问题，且具有可视化图形处理、使用方便、开放式多功能於一体的新一代计算机语言。

In particular, such calculators eliminate the need for candidates to learn and be examined on certain mathematical methods of approximation.

自己心情差的原因也有可能是因为自己前面几个月一直叫着说我要改我要变我要把自己变得更好可是几个月下来了自己却感觉不到改变我不要这样，我不要限制在自己的界限里面

An efficient solution method for structural optimization is proposed by coordinated use of mathematical transformation, two-level approximation concepts and dual theory.

利用包络函数、二级近似概念和对偶理论，提出了一种结构优化的有效解法。

Based on the properties of miniature PSA oxygen production and a linear driving force approximation, a mathematical model for PSA processes of a Special Miniature Oxygen Concentrator is developed in this paper. The boundary and initial conditions for the model are analyzed and determined, and the finite difference method is applied to solve the partial differential equations.

基于微型变压吸附氧氮分离过程的特点和线性推动力模型，建立了描述该过程的数学模型，给出了求解的边界条件和初始条件，采用有限差分法对模型进行了求解。

Based on the properties of miniature PSA oxygen production and a linear driving force approximation,a mathematical model for PSA processes of a Special Miniature Oxygen Concentrator is developed in this paper.

所建立的数学模型可以较为准确地模拟微型变压吸附条件下的氧氮分离过程，为深入研究SARS患者专用PSA制氧机及其吸附器结构优化打下了基础

Directly from the theory of Kirchhoff diffraction, without any approximation about mathematical models, a series of improved digital calculation ways are used to ensure the high accuracy of OTF calculation.

直接从基尔霍夫衍射积分理论出发，在数学模型上考虑了瞳面振幅分布的不均匀性和倾斜因子，并采取一系列改进数值计算方法的措施，力求光学传递函数计算的高精度。

With mathematical transformation and approximation, the differential equation of the minority carrier density in a textured cell takes the same form as the flat cell.

而对绒面结构太阳电池的内量子效率和物理参数关系的理论推导，通过数学变换和高阶近似后所得结果，可归结为与平带同质结相同的形式。

With mathematical transformation and approximation, the differential equation of the minority carrier density in a textured cell takes the same form as the fiat cell.

而对绒面结构太阳电池的内量子效率和物理参数关系的理论推导，通过数学变换和高阶近似后所得结果，可归结为与平带同质结相同的形式。

In this paper, a fluid dynamics model of hydaulicline including frequency-dependent friction is developed andits approaximate expression is got. Two mathematical treat-ments for the approximation are considered.

l引言 由于在液压系统动力学中，液压管道的动力响应有重要影响，所以建立管道的动态模型，特别是准确反映液压管道内各变量间传递关系的分布参数模型，就成为一个重要问题。

CNC machine only to the general linear and circular interpolation, and other curves (such as becoming more open lines) with mathematical method linear and circular approximation, linear and circular interpolation can be special machine outside the curve.

一般数控机床仅对圆弧和直线插补，其它曲线用数学方法，采用直线和圆弧逼近，特殊机床可插补直线和圆弧外的曲线。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

Talk Undelete failed; someone else may have undeleted the page first.

Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。