查询词典 radiating structure

Emphasis is placed on a practical HPM radiating antenna fed by beam waveguide.

通过对波束波导馈电卡塞格仑天线工作原理的分析，论述了波束波导在高功率微波辐射天线中的应用及设计方法，重点介绍了一套利用波束波导馈电高功率微波辐射天线。

Disk absent. Ovary ovoid, cylindrical, or bottle-shaped, glabrous or hairy, many loculed; ovules numerous per locule; styles as many as carpels (15-30), usually reflexed, persistent, radiating, in functionally female flower elongating after anthesis; rudimentary ovary in functionally male flower very small, with minute styles.

花盘无。子房卵球形，圆筒状的，或瓶形的，无毛或有毛的，很多室的；胚珠多数每室；花柱同数于心皮(15-30)，通常反折，宿存，辐射状，功能上的雌花花后延长；功能上的雄花不发育子房很小，具小的花柱。

A motor shaft is arranged in the middle of a motor; the motor shaft is connected with the lower bracket by a connecting plate; the upper bracket is provided with a plurality of radiating holes; a flange of the lower bracket is formed at the external edge of the lower bracket and an axial hole is formed in the middle of the lower bracket.

本发明公开了一种吸尘器电机支架结构，包括上支架和下支架，在电机的中间设有电机轴，电机轴通过连接板与下支架连接，在上支架上形成多个散热孔，在下支架的外缘形成下支架凸缘，在下支架的中间形成轴孔。

Ohms radiating coaxial cable is mainly used in tunnel.mine,subway,high building and high way where there is no direct or good radio wave as signal transmission and transmitting and receiving antennas duplex functions,The cables is characterized with low attenuation,lowVSWR,high power capacity,good signal coupling and corrosion resistance.

50欧姆漏泄同轴电缆主要用于隧道、矿井、地铁、大型建筑内及高速公路、铁路等场合无线电波不能直接传播或传播不良的特殊环境内，兼有信号传输线的发送、接收天线的双重功能。具有衰减低、驻波比低、功率容量高，信号耦合性能优良，抗腐蚀性好等特点。

Take your marker pen and draw a line radiating out from the center of the old valve boss.

以您的标记笔，以此为辐射从旧阀门老板的中心了。

The dharma chakra in Buddhism is the shape of a wheel with eight spokes radiating from the hub that is originated from the chariot wheel in ancient Indian legend. It is regarded as one of the weapons used by the world-ruling king Cakravarti-raja who had all-conquering powers.

佛教的&法轮&标志是沿一轴心对称分布八根辐条构成的一车轮形状，来源于古印度传说中的&轮宝&，它被认为是统治世界的转轮圣王使用的一种武器，具有无坚不摧的力量。

Mishima may derive from the radiating character of certain almanacs made at Mishima, Japan, or it may have been acquired by association with the island of Mishima where the ware was transshipped from Korea.

三岛可能来自辐射性质的某些书上作出三岛，日本，或者可能被收购，与岛上的三岛在转运瓷器是来自韩国。

The craft also discovered a unique feature: more than 100 narrow, flat-floored troughs radiating from a complex central region never before seen on either Mercury or the moon that scientists dubbed "The Spider," NASA said

太空总署说，这艘太空船也发现另一个独特特徵：从复杂中心地区辐射出超过一百条狭窄而平坦的低谷，这是此前在水星和月球上都不曾见过的，科学家将之称为「蜘蛛」。

In order to cover the shortage of the current antenna for high power microwave weapon, the idea of a magnetized plasma channel used as antenna for radiating electromagnetic pulse is proposed. The normal modes of Magnetized Plasma Channel Antenna in lossy gas are analyzed. The concrete realization method of MPCA is simply described. The geometric-model of MPCA is created based on the operating principle of the antenna.

摘要该文针对现有高功率微波武器辐射天线的不足，提出了将磁化等离子体通道用作电磁脉冲辐射天线的思想——磁化等离子体通道天线，分析了MPCA周围为有耗气体媒质时MPCA所传播的一般模式。

Firstly, we research the Vlasov antenna with reflector mainly. A new method to calculate the radiation of the antenna is founded with Vectorial Theory of Diffraction, and the corresponding program is made. The reflective characters of Vlasov antenna are studied with Moment Methods, and the results show that the total reflected energy is less than 0.25%. The radiation patterns of the antenna are analyzed, and the formulas to estimate the wave beam parameters and to design the antenna are provided. The feasibility of radiating high-order modes by Vlasov antenna is also discussed and verified. The hermetization of the Vlasov antenna is researched and the results show that with such kinds of hermetization the antenna can work under gigawatt level. The design of the mode converter from TEM to TMoi is studied, which is useful when the TEM coaxial mode is radiated by Vlasov antenna. At last, the flared-end Vlasov antenna is also discussed.

在Vlasov天线方面：用矢量绕射理论建立了天线辐射场的计算模型并编写了计算程序，该程序计算结果在主瓣上与实验测量吻合良好，近旁瓣也基本一致；利用矩量法计算了天线的反射系数，表明该天线有较小的反射，总的能量反射小于0.25％；详细分析了天线的辐射特性，给出了天线辐射波束相关参数的估算公式和天线设计公式；进一步研究和论证了Vlasov天线辐射高阶轴对称模的可行性；对天线的密封方式和功率容量进行了讨论，结果表明在不需很大密封罩的情况下可以获得GW级的功率容量；为了用Vlasov天线辐射同轴TEM模，研究了TEM-TM_(01)模式转换器的设计，得到了一些基本规律；最后，介绍和分析了带有锥形喇叭的Vlasov天线。

He's a pretty westernised kind of guy.

他是一个非常西化的人。

National spirit is the moral kingpin for a nation to realize common ideal and goal.

一、中华民族精神的基本内涵党的十六大报告指出：在五千多年的发展中，中华民族形成了以爱国主义为核心的团结统一、爱好和平、勤劳勇敢、自强不息的伟大民族精神。