查询词典 antenna resistanc

The position which is showed from this a station antenna in the ambulation the correspondence is how important.

由此可见基站天线在移动通信中的位置是何等重要。

Horizontal radiation diagram of Amos antenna with different number of 3, 5, 7, and 9 dipoles.

图 1：3，5，7，9 不同数目振子的阿摩司天线水平方向图 Fig。

According to Lagrange equation in analytic dynamics, the dynamic equations of the Double-Axis Gyro Stabilized Platform of a certain airborne SAR antenna are derived, its linear model and the transfer functions of other main parts in the DAGSP are given and at last the block diagram of DAGSP is given.

6利用分析力学原理，推导了某机载天线双轴陀螺稳定平台的动力学方程和线性化模型；给出了天线双轴陀螺稳定平台中各主要环节的传递函数及数学模型。

Shadow effect can not be neglected for thermal analysis of spacecraft,Accroding to the angle between solar light and antenna orbit plane and its orbit location,analytical geometry method was used for accurately calculating solar radiation heat flux distribution of reflector surfaces.To analyze the temperature field under heat flux,the formulations of net radiation flux density between two gray elements and the net flux density of gray surface under external thermal flux were deduced.Based on the characteristic of space environment,the nonlinear temperature distribution in transverse direction of reflector shell self radiation were considered,the finite element formulations were given for orthogonal material layered shell by Galerkin method.A layered element including a inner heat source layer was proposed,and the finite element formulation expressed by DOF of the inner heat source layer were put forward with temperature and heat flux boundarys between adjacent layer.

单馈反射面赋形天线是未来星载天线发展的一个重要形式，分析了基于物理光学、几何光学和几何绕射理论的理想反射面辐射场；介绍了基于几何光学的反射面天线赋形方法；针对赋形过程中辐射场的快速分析要求，比较分析了基于物理光学的Fourier-Bessel和Jacobi-Bessel级数展开方法以及GB展开分析方法；利用GB展开快速分析方法在20GHz频率下对0.6m口径的天线进行赋形分析，实现中国大陆的30dB增益覆盖，通过数值计算研究了固定增益期望下的口径尺寸随频率的变化，以及频率为20GHz的不同尺寸天线赋形后的覆盖目标区域最大增益的变化情况。

Responsible for anechoic chamber designs for EMC and antenna test and measurement requirements.

负责EMC、天线测试与测量电波暗室设计。

Anechoic chamber is the primary test site of electromagnetic radiation measurement, also the important facility for antenna and wave propagation research.

电波暗室是辐射电磁场的主要测量场地，也是研究天线与电波传播特性的重要试验设施。

This kind of analysis method can be directly used in the selection design of antenna dip angle and in the confirmation of accuracy target of fuse information transmission system and fuse information control system.

这种分析方法可直接用于对不同目标的引信天线倾角的选择设计及引信信息传输系统、信息控制系统的精度指标确定。

Explore of Debugging Elevation Angle, Azimuth Angle and Polarization Angle of Digital Satellite TV Receiver Antenna

在句译、词译中专业词汇在线翻译、专业词典词汇的双语例句以及中英文、英汉句子翻译。

The design of a loaded annular ring microstrip antenna is given in this paper.

采用矩量法对一种加载圆环形微带天线进行分析和设计，并在理论分析基础上对该种天线进行了研制。

I'm going to need a bigger antenna.

我需要一个更大的天线

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