查询词典 antenna switch

This paper goes deeply into the characteristics of optical polarization and rotation, based on which a new fiber-optic switch is presented.

探讨了光偏振现象和旋光现象的特点，进而利用偏振和旋光现象提出一种新型光开关交换器。

Olive-green metal connector , limit switch actuators have a round ,black plastic connector ;and MX actuators have a rectangular , white plastic connector.

橄榄绿色的金属连接器，限位开关驱动器有一个圆形，黑色塑料连接器；和MX驱动器有一个长方形，白色塑料连接器。

So it's no surprise that when most of us made the switch from landlines to cell phones, we carried over a bunch of our habits.

所以当我们大部分人从用座机改为用手机时，我们都保留了一大串的习惯，这一点也不奇怪。

But when a big Boston bully beats us up, that's when we need to switch lineups, to the Beefy.

但是当体壮如牛的波士顿凯尔特人把我们打败了之后，那样我们就会需要转换阵容，让自己的阵容也很体壮如牛。

Adopt one kind of design plan that PLC controls in the protection the main body of a book has been introduced succeeding an electricity in electric system, that capital is designed time is that the KV circuit imports 10 mainly , change into 380 V voltage grades, before the PLC front and back add front to passage and the queen to passage, change before to passage middle course electric current , voltage a train of, the wave filtering the general is exchanged changing waking up with a start for direct-current, the entering carrying out comparison and switch amounts again , controlling conducting entering PLC, by PLC, The malfunction signal is shown out by lamp light or the alarm signal.

本文介绍了在电力系统继电保护中采用PLC控制的一种设计方案，本次设计主要是将10KV线路输入，转化为380V电压等级，在PLC前后加入前向通道和后向通道，在前向通道中经过一系列的电流、电压转换，将交流转换为直流，进行滤波，再进行比较和开关量的输入，传入PLC，通过PLC的控制，将故障信号通过灯光或者报警信号表现出来。

MFD simulator implements the simulation of operation on Option Selectable Switch by touch screen technique, and by virtual instrument technique MFD implements the collection and management of raster video information and stroke video information, Finally it implements all the function of MFD.

通过对触摸屏的操作来模拟显示器周边键的操作，通过使用虚拟仪器对光栅视频和笔划视频信息进行采集、处理和显示，从而实现了多功能显示器的显示和控制功能。

Its function is to improve the effect in the course of education and the quality in the study of students with the computer technology and the audiovisual. The electric appliance of the high/low-tension switch is the very important equipment of protect in the electrical transmission.

其目的是应用计算机技术和视听媒体来改革教与学的过程，最大限度地提高教学的质量和效益，全面地提高学生的素质，促进学校由&应试教育&向&素质教育&转变。

The development of coal mine production mechanization increasingly requires power supply of the low-tension network in mine to keep higher and higher continuity , security and reliability , also puts forword high demand to the measurement and protection of the power supply device feedback switch .

随着矿井生产机械化水平日益提高，对矿井低压电网的供电连续性，安全性及可靠性要求越来越高，也对供电设备馈电开关检测与保护提出高的要求。

The distinguishing features of the high/low-tension switch are: first, multi-variety and –model; second, large quantity in fixing and working; third, quick development; fourth, frequent operation.

高低压开关电器是发电、输电、变电、配电系统的重要控制和保护设备，其主要特点有：1、品种与型号多；2、安装与运行的数量大；3、发展快；4、操作频繁。

Teaching the malfunction diagnoses of the high/low-tension switch formerly always makes students dull. Many charts of construct of sensors, capability of electric appliance and chemistry characteristics of insulated gasses are very hard to understand. After using of CAI this situation could be improved. Computer-Aided Design helps the perform of CAI.

以往在高低压电器开关故障诊断的课程的教学中，它所涉及的传感器的构造、电气元件的性能以及一些绝缘气体的化学特性等总会让学生感到学起来枯燥晦涩，利用了多媒体辅助教学以后可以在一定程度上改善这种情况，计算机辅助设计可以帮助更好地开展多媒体辅助教学。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48