数学

When the model is established, this thesis calculates the key tache that is traction dynamotors voltage with the method of simulating the adjust characteristic of dynamotor and works out the whole mathematical model.

本文还通过比较数学模型对机车传动系统模拟的记录和东风7型机车水阻试验记录，验证了数学模型的正确性和精确程度。

It is the eagerness of my math teacher that makes me so interested in math.

正是数学老师的工作热情才激起了我对数学的兴趣。

Using SAP5 and model experimental analysist method, the static and dynamic properties of the close-combine frame of the Edger have been predicated.

该方法包括：运用键图理论和方法，建立系统数学模型将数学模型转化为仿真模型，并进行计算机仿真对仿真计算的数据进行时域和频域两方面的分析根据设计需要，决定是否对系统进行优化设计用此方法预测了立辊轧机主传动系统的动态响应特性。

Maths thinking education is the centre in 21 century .

数学思维教育是21世纪数学教育的核心。

Introduce the elementary knowledge related to dimension chain; Propose mathematical model of dimension chain, and analyze the process to build mathematical model; Analyze the search process to generate dimension chain using deep first search method.

介绍尺寸链的相关基础知识；提出尺寸链数学模型，分析了以图论为基础的数学模型的建立；分析了以深度优先搜索法进行尺寸链自动生成的搜索过程。

The contents of mathematics in middle school are divided into elementary algebra and plane geometry. Plane geometry is more favorable for training students'understanding of mathematics beauty.

初中数学的内容分为初等代数和平面几何两大部分，平面几何的直观性较强，显然更有利于培养学生对数学美的理解。

Elementary Algebraic Geometry Student Mathematical Library, Vol.

中文参考译名：初等代数几何（学生数学图书馆，卷。20）（学生数学图书馆，五20

The subject matter of this paper lies at the crossroads of six areas: ring the-ory, group theory, semigroup theory, graph theory, elementary number theory andcombinatorics.

本课题主要涉及数学中的六个领域：环论，群论，半群论，图论，初等数论和组合数学。

According to singular entropy and Percent of contribution to total energy, the de-noising rank is obtained and the signal is reconstructed. The thesis compares reconstruct wave form of different reconstruct rank and the error of original signal and reconstruct signal is contrasted.According to voltage flicker measurement, voltage flicker detection method based on Mathe Matical filtering and Teager Energy Operator is proposed. The multiple MM filter filters out pulse noise and white noise contained in fliker signal, then the filtered signal is tracked accurately and quikly via TEO.

提出了基于数学形态滤波和TEO能量算子的电压闪变快速测量方法，含噪电压闪变信号经过多结构元素复合数学形态滤波后，采用TEO能量算子计算跟踪电压闪变信号的包络，得到的包络信号用Pisarenco谱分析方法获得闪变调制信号的幅值频率等参数，对不同情况下的电压闪变信号进行了仿真验证。

After the optimal design, some parameters of the impeller such as entrance angle and diameter and have been changed. The improved impellers efficiency and cavitation performance are better than the former one.

通过对叶轮入口处的流场分析，证实了该泵性能下降是由汽蚀造成的推测；基于速度系数法建立了叶轮优化的数学模型，通过得到的流场数据和该数学模型对原叶轮进行了优化设计，优化结果对叶片的入口角和叶片的入口直径等参数进行了改进，优化后的叶轮达到了提高泵的汽蚀性能和效率的目的。

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。