直线的

Design and control of the linear synchronous motor is one of the key technology of high speed maglev vehicle.

高速磁悬浮列车的关键技术之一是列车用同步直线电机的设计与控制，本论文主要研究基于高速数字信号处理器的同步直线电动机全数字直接转矩控制系统的基本原理、控制方法、仿真建模和控制系统的实现。

The mathematical model of the linear induction motor is built in the way of motor science, and then the control model of the linear motor feed system is proposed, and the relations between the parameters in the model and the system dynamic performances are studied, using the Simulink Module in MATLAB.

从电机学的角度建立了直线感应电机的数学模型，然后又建立了直线电机进给系统的控制模型，通过MATLAB的Simulink功能模块仿真分析模型中各参数和系统动态稳定性的关系。

This article introduces the status quo of linear stepping electric motor and research content of this topic, then discusses the development of linear stepping motor drive unit and general situation of the researched sample unit, furthermore supply the detailed introduction to DSP controller.

本文首先对直线电机的发展情况以及本课题的研究内容进行了介绍，然后讨论了直线步进电机驱动器的发展和本文所研究的样机的概况，接着对DSP控制器作了详细地介绍。

It holds that for low concentration of wastewater effluent of the sugar mill,the relational line between BOD and COD can be obtained by applying the statistical method of linear regression on the series of data of the corresponding BOD and COD,once it can be determined.

认为对糖厂的低浓度废水：只要测定其对应的生化耗氧量和化学耗氧量的一组数据，通过直线回归法统计，便可得出这两者的关系直线

The head loss coefficient of down inlet linear transition is less than tortile transition and those above of outlet almost same.

设计流量下进口直线扭曲面型渐变段的水头损失系数小于反弯扭曲面型渐变段的水头损失系数，出口直线扭曲面型渐变段的水头损失系数与反弯扭曲面型渐变段的水头损失系数基本相同。

This kind of title is carrier with knowledge of linear, round conic perhaps curve mostly, the knowledge such as integrated function, inequality, triangle, series, involved intellectual feature is more, be in again check thinking ability, the knowledge that asks examinee can combine what had mastered to concern linear, round, conic curve and method, the problem that faces on or data have observation, quite, analysis, integrated, abstraction and wraparound; can use analogy, induce and deduce undertake inferential; undertake well and truly stating.

这类题目大都以直线、圆或者圆锥曲线知识为载体，综合函数、不等式、三角、数列等知识，涉及的知识点较多，重在考查思维能力，要求考生能够结合已经把握的有关直线、圆、圆锥曲线的知识和方法，对面临的新问题或资料进行观察、比较、分析、综合、抽象和概括；会用类比、归纳和演绎进行推理；能合乎逻辑地、准确地进行表述。

End-effect is a main reason of influence on the characteristic of linear motor,and its direct impact is non-stable and undulate edges magnetic field.

端部效应是使直线电动机性能下降的主要原因，它的直接表现是端部磁场的周期性非平稳波动，因此合理有效的分析端部效应能对直线电动机性能的改善提供理论前提。

In two c.s. moving uniformly, relative to each other, all laws of nature are exactly identical and there is no way of distinguishing absolute uniform motion.

在两个相对作匀速直线运动的坐标系中，所有的自然定律都是完全等同的，因而无法分辨出绝对的匀速直线运动。

What is meant by the statement that absolute and not only relative uniform motion exists? Simply that there exists one c.s.

如果说，不仅存在相对的匀速直线运动而且存在着绝对的匀速直线运动，这句话的意义是怎样的呢？

Through carries on the Hough transformation after the license plate outline, with one kind of new K average value algorithm fits the edge straight line, obtains the straight line angle of tilt then to carry on the adjustment to the image; Uses one kind of fast pattern plate match union vertical and the horizontal axis projection carries on the division to name board various characters, raised the character division speed and the precision; Finally separately carries on the recognition to the alphanumeric character and the Chinese character character, the alphanumeric character uses the BP neural network algorithm, but the Chinese character character uses based on the most close neighbor sorter template matching algorithm.

通过对牌照轮廓进行Hough变换后，用一种新的K均值算法拟合边缘直线，得到直线倾斜角度进而对图像进行校正；采用一种快速的模版匹配结合垂直与水平投影法对船名牌上的各字符进行分割，提高了字符分割的速度和精度；最后分别对数字字符和汉字字符进行识别，数字字符采用BP神经网络算法，而汉字字符采用基于最近邻分类器模板匹配算法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。