查询词典 speed

In this system,the VVVF(variable voltage variable frequency) control method based on magnetic flux trajectory is applied.In the system,it is the target for the magnetic flux linkage polygon to be greatly approximate to the ideal magnetic flux circle.Considering such limitations as the low speed torque ripple,high speed real time and the working frequency of switching element,through the subsection synchronization control method by applying different numbers of magnetic flux linkage polygon for different frequency range,the perfect precision specifications for speed can be obtained.

系统采用基于磁通轨迹法的他控式变频调速方案，以磁链多边形尽量逼近理想磁通圆为目标，并考虑低速转矩脉动、高速实时性和开关元件的工作频率限制等约束条件，通过采用分段同步控制方式，在不同的频段采用不同的磁链多边形边数，使系统获得了优异的转速精度指标。

An object receives in proportion to its speed resistance, and only receives its force of inertia the impetus, but the movement, through the isotopic dielectric, divides into the time the equal gap, forms the geometric series in time each time-gap's start's speed, but during passed over gently and swiftly distance in proportion to this speed.

如果一个物体受到正比于其速度的阻-，并只受其惯性力的推动而运动，通-均匀介质，把时间分为相等的间隔，-则在每个时间间隔的开始时的速度形-几何级数，而其间掠过的距离正比于-速度。

Condition: If an object receives in proportion to its speed resistance: and only receives its force of inertia the impetus, but movement: conclusion: Through the isotopic dielectric, divides into the time the equal gap, forms the geometric series in time each time-gap's start's speed, but during passed over gently and swiftly distance in proportion to this speed:.

通过均匀介质，把时间分为相-的间隔，则在每个时间间隔的开始时-速度形成几何级数，而其间掠过的距-离正比于该速度

The change of speed of autoconversion of snow to graupel, different collection efficiency of ice phase particles, the quality content or number content averaged falling speed, various parameters of quality and falling speed of snow, will influence the quality and number content of water substances.

雪晶自动转化成霰、不同的冰相粒子间的碰并效率、不同的雪晶质量系数和落速系数和采用不同的平均落速，将影响粒子的比质量和比数浓度；模拟大陆性云和海洋性云应采用不同的云参数；冰晶核化应考虑温度变率和水汽冰面过饱和度。

2Particle numeral density distributing law of the system not only bear on and average speed and seat gravitational potential energy of system,but also bear on grads of temperature and speed about distance of system,at one time,it bears on whole spore speed of system.

本文详细的分析了地球大气系统粒子的数密度的分布规律，从中发现：(1)该系统的平衡条件有别于一般热力学系统的平衡条件；(2)该系统粒子数密度分布规律不仅与系统粒子的平均速度和所在处的重力势能有关，而且还与系统的温度和速度的距离梯度有关，也与系统的整体运动速度有关。

There are, in fact, two kinds of speed, the ground speed, which is the speed relative to the air.

有，事实上，两种速度，地面速度，这是速度相对空气。

The highest speed between hurdles of Liu Xiang surpass the average speed of the other 8 top 110m hurdlers' technique in world track and field championship in Paris France 2003 . The number of the clearance of hurdles in a high speed is as many as others.

刘翔的最高栏间速度超过了2003年法国巴黎世界田径锦标赛前8名的运动员平均最高分栏速度，保持高速度过栏的区间数也同其他优秀运动员相当，具备了战胜世界顶尖高手的实力。

Is one of the earliest professional development and production of electric vehicle speed controller of the private scientific and technological enterprises, the company has a strong professional design and production capacity, products have been a number of brands for the domestic electric vehicles matching efficiency and performance are better than ordinary products, annual production capacity of 200,000 sets, the company has brush controller, using pwm control, high efficiency, with over-current, current limiting, undervoltage,"speed" a wide range of protection features Special high-power brush has controller using the latest electric vehicles for the use of high-life relays and intelligent anti-Speed circuit.

溧阳爱斯特自控器材科技开发有限公司是国内最早专业开发生产电动车调速控制器的民营科技企业，公司具有较强的专业设计及生产能力，产品已为国内诸多品牌电动车配套，其效率及性能均优于一般产品，年生产能力二十万套，本公司生产的有刷控制器，采用pwm 控制，效率高，具有过流、限流、欠压、"飞车"多种保护功能，特别大功率有刷控制器采用最新专供电动车使用高寿命的继电器及智能防飞车电路。

For improving mixing quality and efficiency,authors gave out definition of mixer rotation speed and its rationality criterion.With the help of theoretical analysis and experimental research,authors discussed the relations among mixer rotation speed with concrete homogeneousness,type of mixer,mixing power and mixing materials and revealed the rational range of mixing speed during mixer designing and using.

为了提高搅拌质量和效率，给出了搅拌机转速的定义和评判搅拌机转速合理与否的准则；采用理论分析和试验研究相结合的方法，分析了搅拌机转速与混凝土均匀度、搅拌装置类型、能耗和被搅拌材料的关系，给出了搅拌机设计和使用时合理转速的范围。

In general, the design work with traditional measures is done by hand, which cannot meet the needs of the technology and manufacture. So the author has developed a CAD hydraulic design software fit for lower specific speed axial flow runner, which is easily operated by users.The main research work of this paper is as follows:1 Analyzing the main reason of axial flow power station cannot work well under littler volume of flow in some season and putting forward an improving scheme, pointing out the characters of design under abnormal factors.2 Combined with the development of the industry in our country, the abnormal hydraulic design method of propeller turbine is discussed based on present literature, data and experiment results.3 Guided by the design method of software engineering, a suit of hydraulic design software of Lower Specific Speed Axial Flow Runner is programmed by the object-oriented programming language Visual Basic and a straightforward, concise and standard Windows human-computer dialogue interface is designed for the system, which makes the operation of the system very convenient.4 ActiveX Automation technology is adopted as the interface with AutoCAD and the hydraulic drawings are edited, modified by AutoCAD until hydraulic model drawings according with the demand of engineering practice are output.5 To resolve practice problem, the author has designed a lower specific speed axial flow runner for Duowa Power Station through an example.

论文的主要内容有：1 深入分析很多轴流定桨式水电站枯水季节小流量下不能发电的主要原因，提出减容改造方案，并指出超常规条件下的改造设计特点。2 结合国情及行业发展需要，参考现有资料、文献和前人的研究成果，进行低比转速轴流式转轮叶片水力设计方法的研究，对轴流式转轮叶片的奇点分布法水力设计进行了全面的探索，结合现代计算机技术，找到了一种针对特殊条件的轴流式转轮叶片水力设计方法。3 仔细比较多种AutoCAD二次开发工具后，结合本课题的特点，选用Visual Basic语言，综合应用软件工程的设计思想，进行低比转速轴流式转轮叶片水力设计软件的编制，为系统设计了直观、简洁和标准的Windows人机对话界面，便于用户操作；编程时在考虑到设计条件特殊性的同时，尽量做到程序的通用性，使之可用于解决同一类问题；另外，大部分程序还可移植到普通轴流式转轮叶片水力设计中，具有良好的适应性。4 利用ActiveX Automation技术与AutoCAD接口，对AutoCAD进行二次开发，在AutoCAD下实现水力图的自动生成和编辑，直至输出符合实际工程要求的木模图。5 通过算例，为多哇水电站设计了一个低比转速轴流定桨式转轮，解决其在枯水期小流量下不能发电的问题。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。