查询词典 antenna

The demands of modern technique have a growing pressure for improvement of radome as a protection in front of antenna, which include the aerodynamical qualities, structural requirements of the airframe and excellent electromagnetic characters.

摘要——现代技术对于作为防护层安装在雷达天线前面的雷达罩提出了很高的要求，除机械特性和气动特性以外，还必须具有良好的电气性能。

Digital Television Subscriber Management System is the Information Management System oriented to Community Antenna Television Subscriber to realize the agendum and transaction management.

数字电视用户管理系统是各地有线电视运营商面向有线数字电视用户、实现日常业务管理和运营管理的信息管理系统。

Radar mast shall be installed on the centerline on compass deck above wheelhouse, Signal light pole and anemoscope, navigation light, signal lights racks, Suez Canal sign lights, antenna, radar, air horn etc.

雷达桅安装在驾驶室以上罗经甲板的中心线上。

The 1989-1992 (4th generation) offered in other countries received unheard of equipment for an Accord such as a Navigation System, TV, mini-disc player, digital automatic climate control, traction control, Anti-Lock brakes, side-marker lights, heated mirrors, outside temperature gauge, an in-cabin air refiner, map lights, seat heaters, standard fog lamps, headlight washers, rear fog light, full-power seats, telescoping bumper pole, half-mast antenna switch.

在1989-1992年，在其他国家提供的接收设备没有听说过一个协议，如导航系统，电视，微型碟播放器，数码自动气候控制系统，牵引力控制系统，防抱死制动系统，侧-廓灯，可加热后视镜，室外温度测量仪，一个舱内空气炼油，阅读灯，座椅加热器，标准的雾灯，头灯清洗装置，后雾灯，全电动座椅，保险杠伸缩杆，半旗天线开关。

An example of an antenna blind cone is that of an air route surveillance radar.

天线盲区的一个例子是航路监视雷达。

The station antenna is NTT DoCoMo and the equipments of the terminal air wireless coupling of the customer cellular phone.

基站天线是移动通信网络与用户手机终端空中无线联结的设备。

For being easier to conduct the dynamic analysis of an airborn radar antenna, using the mechanical property of the sandwich structure, an equivalent method is proposed.

庄苹为便于机载雷达天线的动力学分析，由夹层结构的力学特性，提出了用单层结构等效夹层结构的方法。

The Airy function is used to calculate the plasma impedance and the grill-plasma scattering matrix is deduced, then the coupling properties of the HT-7 LHCD MJ launcher are studied with the antenna scattering matrix and the grill-plasma scattering matrix based on the liner coupling theory. The average power reflection coefficient, directivity, power spectrum are obtained for different edge plasma densities and for different phasings between main waveguides.

采用线型耦合理论，用艾黎函数计算了等离子体阻抗，推导出常规波导阵对等离子体的散射矩阵，并利用它和天线自身的散射矩阵研究了HT-7装置低杂波多结波导阵天线的耦合特性；计算了其平均功率反射系数、方向性系数和功率谱与等离子体边缘密度和主波导相位差等参数的关系。

This thesis contributed to the comprehensive study of the Finite-Difference Time-Domain method and its application to the numerical computation of radiated electromagnetic fields in switched mode power supplies. The work includes mainly three parts: the study on the performance of PML absorbing boundary condition applied to pseudo low frequency electromagnetic problems; the validation of the FDTD method with PML absorbing boundary conditions and the corresponding computer software based on the numerical study of the electromagnetic field of an electric dipole antenna, and its application to the numerical computation of radiated electromagnetic fields in switched mode power supplies; the development of an improved alternating direction implicit finite-difference time-domain method.

在综合前人工作基础上，本文对时域有限差分法及其在开关电源辐射电磁场数值计算中的应用进行了系统的分析和研究，其核心内容包括：伪低频电磁场数值计算中PML吸收边界条件性能的研究；基于基准问题—电偶极子天线三维辐射电磁场，验证了本文构造的基于PML吸收边界条件的三维FDTD法及其计算软件，并应用于高频开关电源辐射电磁场的数值分析；提出了一种改进的交替方向隐格式时域有限差分法。

It points out the topic, meaning and creative; introducing the consist and principle of the intelligent vehicle navigate system in chapter 2; analyzing the method of GPS-oriented and the error origin in chapter 3; analyzing briefly the principle and merged method of interspaced diversity and resist multi-decline in chapter 4; introducing the hardware and software realization of ambulant station of intelligent vehicle navigate /dispatcher system based on multi-GPS antenna in detail in chapter 5; giving the debugging and simple trial result of ambulant station in chapter 6; The lasted propose solving tactics to problem that exist in studying, draws a conclusion of this thesis and plans the future researching works.

指出本课题的研究的主题、意义及创新点；第二章概括性介绍了智能车辆定位导航系统的组成与原理；第三章分析了GPS定位的方法和误差来源；第四章重点分析了空间分集抗多经衰落的原理和信号合并方法；第五章详细介绍了多GPS天线智能车辆导航/调度系统车载台的软硬件实现；第六章给出了车载台的调试和简单试验结果。最后对研究中存在的问题提出了解决策略及下一步的研究方向。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。