查询词典 mathematical notation

The curve of growth is used as mathematical model to imitate the change law on mine gushed water quantity.

运用增长曲线数学模型模拟矿井涌水量的变化规律，解决了矿井涌水量的模型描述及矿井最大涌水量的预测，为矿井合理配置提供了科学的依据。

In this paper, a three-dimensional multi-level hydrodynamic model with curvature correction in curvilinear coordinates has been developed based on the update turbulent theory and numerical method, which can effectively solve the practical problems of flows and water quality transportations in hydraulic engineering, and can strengthen the practical usage of the mathematical model.

本文基于现代紊流理论、现代数值计算方法建立适合描述水利工程中紊流规律的非线性数值模型，即曲线坐标系下的多层紊流水动力模型，旨在提高紊流精细模拟的实用性，以求有效地解决水利工程中的水流和输运现象的实际问题。

In food scientific research process,the establishing of computational method in mathematical model was complex,in order to make the proces"s fool" the curvilinear regression and multiple regression were made as the example,the application method of SPSS statistics software in food scientific research modeling was introduced in this article.

食品科学研究过程中建立数学模型计算方法复杂，为使该过程"傻瓜化"，该文以曲线回归和多元回归问题为例，介绍了SPSS统计软件在食品科研建模中的应用方法。

When propagating light\|ray passes through two fixed points in the gradient index mediums and a cuspidal variable\|point （at this point the trace equation of propagating light\|ray is non\|differentiable） at the borderline of two different GRIN mediums, the mathematical relationship, which the trace equation of propagating light\|ray and borderline equation of two different GRIN mediums should satisfy, is derived by the Fermat's principle and calculus of variation.

当光线通过梯度折射率介质中两个固定点和两个GRIN介质界线上的可动尖点（光线轨迹方程的不可微点）时，由费马原理和变分法运算推得传输光线的轨迹方程与两种不同GRIN介质的界线方程应满足的微分关系式。

This article uses the literature material law, the cut-and-try method, visits the survey procedure, the mathematical method of average and so on, in the back more -like high jump teaching, the use skill migration rule, begins from the interesting teaching to create the thin raw white silk and the design sports game, and utilizes it in the back -like high jump experiment teaching, through the teaching discovered utilizes the game teaching method in the back more -like high jump teaching, not only is advantageous to the student to complete technical movement grasping, moreover is advantageous to the change former back -like high jump teaching arid tasteless aspect, thus enhances the teaching effect.

本文采用文献资料法、实验法、走访调查法、数理统计法等，在背越式跳高教学中，利用技能迁移规律，从趣味性教学着手创编与设计体育游戏，并把它运用于背越式跳高实验教学中，通过教学发现在背越式跳高教学中运用游戏教学手段，不仅有利于学生对完整技术动作的掌握，而且有利于改变以往背越式跳高教学枯燥乏味的局面，从而提高教学效果。

This paper has created the mathematical model of the hydraulic system of the steel bar cutter, considered the hydraulic power unit, accumulator and hydraulic pipe, specially the dynamic characteristics of the hydraulic cylinder buffer structure.

本文建立了高速钢筋切断机液压系统的数学模型，充分考虑了液压动力元件、蓄能器及液压软管等元件的影响，着重分析了液压缸缓冲结构的动态特性。

In order to improve the operation of the plant equipment and the reliability of economy, the paper thermal economic evaluation of the study, in a cycle function on the basis of the theory of the matrix model based on the thermal analysis method the use of mathematical software MATLAB the corresponding generic calculation procedure, and use VB establishment of display interface Calculation of the power plant thermal system hot economy.

为了提高电厂设备的运行经济性以及可靠性，本文以热经济性评价为研究课题，在以循环函数法为理论基础上提出了基于矩阵模式的热力系统分析方法，利用数学软件MATLAB编制了相应的通用性计算程序，利用VB编制了显示界面，计算电厂热力系统的热经济性。

The mathematical model of reliability design for shaft rigidity was established based on reliability inference theory.Reliability calculation of cylinder shaft rigidity of press was proceeded and regularity of cylinder shaft rigidity reliability as the condition change was found.

应用可靠性设计相干理论建立了轴的刚度可靠性设计的数学模型，着重探讨印刷机印刷滚筒轴的刚度可靠度的计算，并得出不同条件下印刷滚筒轴刚度可靠度的变化规律。

To study the taxiing-induced dynamic response of the aircraft with multiple wheels and multiple landing gears due to runway unevenness, base on several reasonable and necessary assumptions, the mathematical model of aircraft in taxiing is established using the d'alembert's principle. It can simulate taxiing inpact properties accurately, it considers in detail the vertical and horizontal motion and pitching about its center of gravity and the significant symmetric elastic modes.

在一些必要合理的假设下，利用达朗贝尔原理，建立了多轮多支柱式及小车式起落架飞机地面滑跑动态响应分析的全机模型，考虑全机沉浮、机体弹性和定常气动力的影响，起落架支柱的弹性变形，小车式起落架的车架的俯仰运动以及弹性变形，对等速滑跑飞机建立了全机运动的微分方程，并以旧金山28-R跑道为地面输入，利用时域积分的方法得到飞机滑跑的各种响应。

In this paper,a humanoid robot hand with five fingers and a palm（robot hand is called below for short） is designed.Based on the robot hand,the mathematical teaching model is studied,which takes the data glove as the input resource for the robot hand.

设计和实现了一个具有五个手指和手掌的仿人机械手，并利用数据手套对其进行了示教，使其能有效地完成复杂的作业。

Chinese traditional virtue is humility and wariness,the compliment and praise to the others should be declination

中国人的传统美德是谦虚谨慎，对别人的恭维和夸奖应是推辞。如

We bought this house on the never-never.

我们以分期付款的方式买下这座房子。