查询词典 electric motor

In a similar way, though not with the same precision, it is possible to calculate in advance the mode of operation of an electric motor, a transmission system, or of a wireless apparatus, even when dealing with a novel development.

同样，尽管精确程度有所不同，但还是可能事先算出电动机、输电系统、或者无线电装置的运转方式，甚至在处理痹烩些还要新的事物时也是这样。

Like the Wasp, the Raven has standard fixed wings, a propeller, and an electric motor.

这么大的差异并不存在于任何其他的标准航空部队中，例如战斗机和运输机。

The main products as follow the motorcycle engine; the general engine; the digitalgenerator set; the water pump; the electric motor; thresher; reaper; sheller and themulti-function mini-tiller and so on .

主要生产：摩托车发动机系列；通用汽油机系列；数码发电机组；水泵机组；电动机；稻麦脱粒机；割晒机；碾米机及多功能微耕机等小型农业机械。

Electric motor: The electrical machinery use all seals up the high torque low inertia, the mouse cage type valve special-purpose electrical machinery, the fixed running time is 10 minutes

1电机：电机使用全封闭高转矩低惯性，鼠笼式阀门专用电机，额定运行时间为10分钟。

The powertrain of the VW has been furnished with two-cylinder, turbo-diesel 39-hp engine with a 14-hp electric motor.

在大众动力总成已配有两缸，涡轮柴油39与14马力电机马力发动机。

The products sold well both at home and abroad, it seeks hi-tech and high quality brand as managing ideal; good credit, image, making friends and developing the market as the managing purpose, the SF-type auto-lubrieating oil free bearing series have used in the sliding parts of various machines such as automobile, motorcycle, textilo machinery, printing, tobacco, food machine, micro-electric motor, metallurgy, mining machinery forging machine tool, lifter, We design and produce high quality, low price bearing produces to meel the needs of all customers over the world.

公司生产的自润滑无油轴承系列，广泛应用于各种机械的滑动部位，如汽车、摩托车、纺织机械、印刷、烟草、食品机械、微电机、冶金、矿山机械、锻压机床、起重设备、建筑机械、水利机械等。公司将热忱及时地为国内外用户设计、生产高质量、低价位的轴承产品。

The article presents the developing condition of PWM and SVPWM first.Then the theory of SVPWM is discussed in detail.The SVPWM is based on the thought of magnetic chain tracking.It makes the ideal magnetic chain circle of three-phased sysmmetry electric motor supplied by three-phased sysmmetry sine wave voltage for basis,uses the practical magnetic chain vector formed by the different switch modes of three-phased inverter to track the basic magnetic chain circle.During the course of tracking,the inverter changes the switch modes properly to form the PWM waves.Then the modulation wave of SVPWM is analyzed in detail.The modulation wave of SVPWM is implicit,but the analogous modulation wave in A-B-C axis needs to be calculated in order to expose the internal relation of SVPWM and SPWM.That is to show the implicit modulation wave of SVPWM. SVPWM actually is a transformed SPWM ruly sampled by the modulation wave which is injected by the zero prefaces based on space vectors.

本文首先对脉宽调制技术的发展现状进行了综述，在此基础上分析了电压空间矢量脉宽调制技术的发展现状；接着对空间电压矢量脉宽调制技术的基本原理进行了详细的分析和推导，SVPWM是基于磁链追踪的思想，它以三相对称正弦波电压供电下三相对称电动机定子理想磁链圆为基准，由三相逆变器不同开关模式下所形成的实际磁链矢量来追踪基准磁链圆的，在追踪的过程中，逆变器的开关模式作适当的切换，从而形成PWM波；然后详细分析了电压空间矢量脉宽调制技术的调制波，虽然SVPWM法的调制波是隐含的，但是为了揭示SVPWM法与SPWM法的内在联系，需要求出SVPWM在A-B-C坐标系上的等效调制波，也就是将SVPWM的隐含调制波显化；SVPWM实质是一种基于空间矢量在三相正弦波中注入了零序分量的调制波进行规则采样的一种变形SPWM。

Keywords: subway; straight-lined electric motor; radio frequency

本论文中主要说明射频发射与接受装置遥控直线电机驱动方式的地铁模拟系统。

The Type 6 contained an electric motor driving a rotor mounted on a stem, the end of which actuated a linkage.

6号包含一个电机驱动的陀螺转子，转子装配在一个杆上，杆的末端驱使一个连接器。

However, the amount of electricity it produced was very tiny. There was still another use for induction. Faraday also created a tiny electric motor—too small to do the work of a steam engine but still quite promising.

Faraday 也制造出一种小型电机，它太小以至于不能取代蒸汽机器的工作，但仍然非常有前景。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。