查询词典 dipole antenna

Reflecting objects or targets intercept and reradiate a portion of the radar signal;asmall amount returns in the direction of the radar and is collected by the antenna.

雷达信号(其形式通常为重复的短脉冲序列)由发射机产生，通过天线发射，反射物拦截并反射部分雷达信号，其中一小部分向雷达方向反射回来，被天线接收。

Theradar signal,usually in the form of a repetitive train of short pulses,is generated by a transmitter and radiated into space by an Bed / Night Stand or targets intercept and reradiate a portion of the radar signal;asmall amount returns in the direction of the radar and is collected by the antenna.

雷达信号(其形式通常为重复的短脉冲序列)由发射机产生，通过天线发射，反射物拦截并反射部分雷达信号，其中一小部分向雷达方向反射回来，被天线接收。

After passage of the transmitted signal, the TR switch reconnects the receiver to the antenna.

当发射信号通过后，收发开关重新将接收机与天线接通。

Because of the filtering property suggested, two-dimensional periodic screens which were named the frequency selective surfaces have attracted a great deal of attention for many years and have been found various applications, such as band-pass radomes, reflectors of antenna system, polarizers and so on.

「频率选择表面」是由一群在空间中呈周期性排列的金属所组成的二维阵列。由於其滤波的特性，多年来，吸引了大量研究工作的投入。研究中发现，频率选择平面在电磁波的许多频段中，具有广泛的应用。例如在微波中可用於雷达或天线系统，在红外光的频段中则可用於极化器或提升分子雷射的效率。

The design of a large aperture slot antenna for harbor radars is studied in this paper.

本文仅就港口雷达大口径波导裂缝天线的设计进行探讨。

Space-time signal processing as well as its application in mobile communications the Smart Antenna System, has been one of the prent focuses in array signal processing field.

时空二维阵列信号处理及其在移动通信中的应用——智能天线技术是目前阵列信号处理领域研究的热点之一。

The company says the Burj will fulfill the Chicago-based Council on Tall Buildings and Urban Habitat's four criteria for the tallest building: the height of the structural top, the highest occupied floor, the roof's top, and the spire's tip, pinnacle, antenna, mast or flag pole.

公司宣称，迪拜高塔将奉行芝加哥理事会制定的高层建筑和城市人居的四重标准：结构性定点的高度、最高层数、屋顶高度、尖端高度、天线高度和旗杆高度。

The company's main product is glass fiber and glass fiber reinforced plastic products, brands as a "ding" brand, glass fiber products are: enhance the grinding wheel mesh, self-adhesive tape, E-glass fiber cloth, alkali-resistant mesh, high silica cloth , Plaid, geogrid, decorative±, grid yarn; glass steel products are: grating, flange, tank, military antenna, flowerpots, tapered poles, mast, communication pole, pultrusion type materials, etc., forming a wheel enhance the series, building enhanced series, decoration series, the road to enhance series, special fiber series, filtration and insulation series mainly textile-type fiberglass products system, with a modified glass fiber technology, weaving technology, surface treatment technology at the core technologies with independent intellectual property rights system.

公司主营产品为玻璃纤维及玻璃钢制品，品牌为&鼎&牌，玻璃纤维制品有：增强砂轮网布、自粘胶带、无碱玻璃纤维布、耐碱网布、高硅氧布、方格布、土工格栅、装饰壁布、网格纱；玻璃钢制品有：格栅、法兰、贮罐、军用天线、花盆、锥型灯杆、线杆、通讯杆、拉挤型材等，形成了砂轮增强系列、建筑增强系列、装饰装修系列、道路增强系列、特种纤维系列、过滤与保温系列为主的纺织型玻纤制品体系，拥有以玻纤改性技术、织造技术、表面处理技术为核心的具有自主知识产权的技术体系。

A power antenna without relay box cannot be used with this unit.

没有中继盒的电源天线不能和本机一起使用。

Among them is, for example, the coffee can antenna that has gain of about 6-7 dBi and is very inefficient as a feed for offset parabolas.

它们是，例如，咖啡筒天线有大约6-7dBi的增益，做偏馈抛物面天线的馈源是非常低效的。

Salt is good, but if the salt becomes flat and tasteless, with what do you season it?

14：33 盐本是好的，盐若失了味，可用什么叫它再咸呢？

He reiterated that the PLA is an army of the people under the leadership of the Communist Party of China.

他重申，人民解放军是在中国共产党领导下的人民军队。