天线

Using the moderately thick cylindrical model and sinusoidal interpolation basis function, the sleeve monopole at the circular ground plane is analyzed by the moment method. The input impedance and radiation pattern are given.

采用粗圆柱线天线快速精确计算模型，选用正弦插值基函数，将圆盘地面和套筒作为一个整体进行矩量法分析计算，研究其驻波和辐射方向图特性。

At my office, I got good results by attaching the antenna to a venetian-blind slat and tinkering with the skyward aim.

在我的办公室里，我把天线接在百叶窗上，对准天空的定点时，收讯效果就很好。

Firstly, the directional beam of smart antennas worsens the hidden terminal, and it even introduces new problem of node deafness.

在MAC协议研究中，引入智能天线和功率控制技术后，有助于减小信号干扰，改善链路的传输质量，从而显著改善MAC协议性能。

Simulations indicate that significant SNR can be obtained and the system performance is better than that of single antenna case.

仿真实验结果表明，本文所提出的模型可以获得较好的信噪比，与单天线相比MIMO-OFDM系统性能明显提高。

All the antennas are controlled from headquarters at the Array Operations Center in Socorro, New Mexico.

所有这些天线，都由新墨西哥州索科罗的阵列控制中心来进行控制。

From the Very Large Array near Socorro, New Mexico.

位于新墨西哥索克罗附近的甚大天线阵报道

When Japan launches a 33-foot radio dish into orbit next year the world's first space radio telescope will use the Very Long Baseline Array's correlator in Socorro as its "brain," and will tie in with the array for joint observations.

日本明年将把33英尺的射电抛物面天线送入轨道，此时世界第一台空间射电望远镜，将索科罗德的甚长基线阵列处理机作为其"大脑"，与该阵列结合为联合天文台。

Radome is one of the key parts of the active homing guidance weapon, which is a large complicated shell solid of revolution made of hard and brittle material.

主动导引头天线罩是主动式制导武器的关键部件之一，是由硬脆材料制成的大型薄壁回转体零件，其内廓形面属三维高次幂的复杂曲面。

A low cost portable upper atmospheric sounding system used by both balloon and m icrorocket is presented, which has much lower ratio of signal to noise and wid er bandwidth.

本文介绍通过提高接收系统的信噪比同时采用宽波束接收天线，研制了一套低成本、轻便式高空大气探测简便系统。

The radiation problem is transformed into a transmission problem of the corresponding waveguide structure to avoid the difficulty of the field source problem which is met in the traditional analysis.

在分析过程中，将天线的辐射问题转化为相应波导结构的传输问题，从而避免了求解场源问题的困难；并使计算过程得到了简化。

The big eared hedgehog, the little owl, the sand gecko, the three-toed jerboa, and every show needs a villain - saw-scale - the viper!

大耳刺猬，小猫头鹰，沙壁虎，三趾跳鼠，每场戏都需要反派角色：蝰蛇。

Plasmodiophora brassicae ; resting spores ; density gradient centrifugation of sucrose ; ultrasonic disruption

根肿；休眠孢子；蔗糖密度梯度离心；超声波破碎