数学分析

In this paper, the mathematical model of BLDCM drive system using current inverter has been analyzed.

本文分析了无刷直流电动机在电流型变频器下的系统数学模型。

Through the establishment of mathematical model of arc pressure, this paper analyzes the improvement of high-frequency pulse current to arc characteristics.

本文建立了电弧压力的数学模型，分析了高频脉冲电流对电弧特性的改善。

In order to analyze the influence on flood control by Chenhu super bridge in Hanjiang River , a two2dimensional math2ematical model of water flow under non2orthogonal curvilinear coordinates is established , and then , the model is applied to Han2jiang River.

为了分析沉湖特大桥对汉江沉湖河段的防洪影响情况，建立了非正交曲线坐标下平面二维水流数学模型，并应用该模型对汉江沉湖特大桥修建前后的水流运动情况进行了模拟。

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。

Theoretical equations by analyzing earth pressure balance shield cutterhead′s cutting the ground are deduced and the numerical model is set up.

通过对土压平衡盾构掘进机刀盘切削土体进行理论分析，建立数学模型，得出相应计算公式。

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 limit point is analysed by establishing the mathematic model of cyclinder and taper orthoyonal.

通过建立圆柱与圆锥正交时的数学模式，对极限点进行几何分析，用微积分的方法求出极限点的坐标及变化规

Based on a second order damped oscillation differential equation for a missile and upon a detailed analysis of the balance sideslip angle under commands from several different ways of control, the paper proposes some significant empirical criteria for the static stability design of anti tank missiles.

根据弹体摆动运动的简化数学模型，通过对几种控制方式不同的反坦克导弹在指令作用下的平衡侧滑角等数据进行分析研究，得出了反坦克导弹静稳定度设计的一个经验性法

According to the definition of the minimum zone method, the mathematical model is presented for evaluating flatness error and establishing datum plane equation.

分析了常用的近似评定法(三点法、对角线法、最小二乘法等)存在的局限性，根据最小区域法的定义，给出了基准平面方程及平面度误差评定目标函数数学模型的建立方法，并举例说明了采用Matlab进行平面度误差的计算。

Based on mathematical mechanization method and computer symbolic processing technique this paper carried out a solution by symbolic method for position analysis of robot with octahedral and decahedral variable greometry truss.

基于数学机械化方法和计算机符号处理技术，对八面体及十面体变几何桁架机器人的位置分析进行了符号法求解，成功地将非线性位置约束方程组化简为等价的三角化方程组，分别导出了单变量的16次和48次代数方程，并给出一个数字实例说明这种方法。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。