查询词典 antenna switch

This switch is used for compounded type transformer. It is classified into four-position and two-position products. The four-position switch is divided into "T" type 、"V" type and "I".

本开关应用于组合式变压器，负荷开关有四位置和二位置开关，四位置开关按结构形式不同可分为T型、V型和I型。

The case occurred when the system will automatically switch to the police regional camera images, video recorders start time, the operator can easily switch to track suspicious scene images and video for analysis with the case.

发生案情时系统能自动切换至报警区域摄像画面，同时启动长时间录像机录像，也可由操作人员方便地切换画面跟踪可疑场景，并录像以供分析案情用。

By using this combined curve, the widening or decrease of the track gauge is 0.06mm on the actual switch point, 0.78mm on the planing Start point if the longitudinal displacement of the switch rail is 20mm.

采用所选线型时，若尖轨向前或向后纵向移动20mm，尖轨实际尖端位置轨距减小或增加0.06mm，尖轨刨切起点位置轨距减小或增加0.78mm。

Such as: You can press the keyboard Ctrl / Alt / shift key and so on through the rolling wheel WHEEL able to switch different functions, such as pressing ALT when the scroll wheel can toggle the view display / press the scroll wheel can switch SHITF

可以在按下键盘Ctrl/Alt/shift等键时通过滚动滚轮WHEEL能可切换不同功能，如按下ALT时滚动滚轮可以切换视图显示方式/按下SHITF滚动滚轮可以切换

This is another new milestone from its previous research demo that able to switch on a power switch through the mind thinking.

这是另一个新的里程碑，从以往的研究演示可以切换上电源开关，通过头脑的思维。

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。

Placing the switch in the test position illuminates the indicator lights, and placing the switch in the dim position dims them.

将开关置于测试位照亮指示器灯光，驾驶舱指示器系统的灯光可通过中央面板上的&灯光&开关来调暗或测试。

The main products are: timer; counter; photoelectric switch; close switch; temperature controller; solid-state relay; security screens, etc..

主要产品有：计时器；计数器；光电开关；接近开关；温度控制器；固态继电器；安全光幕等。

Switch force and inadequate displacement of elastic bending switch rail is one of the key parameters in the design of turnout.

随着列车提速和客运专线的建设，道岔的设计也由静态设计向动态设计转变，弹性可弯尖轨及心轨的扳动力及不足位移是道岔设计中的关键问题。

The design techniques of multi-channel field distortion switch were studied and a 200kV/100kA ring rail electrode switch was designed and tested.

成功设计和研制了200kV/100kA环型轨道式场畸变开关和200kV激光触发多级多通道开关，达到了国内先进水平。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。