查询词典 antenna

A new kind of excitation source model, which is more approximate practical situation, is presented. Based on the results, the input impedance, gain and directivity of a rhombic antenna is analyzed by using moment method and microwave network theory.

针对卫星通信拥挤、短时无法补充的缺陷，提出了一种新的更接近实际的平衡激励源处理方法，并在此基础上利用微波网络理论与矩量法相结合，系统地分析、计算了菱形天线的输入阻抗、增益及方向特性。

An antenna designed to have an approximately constant input impedance over a wide range of frequencies; e.g., terminated rhombic antennas and wave antennas.

一种天线，在一个大的频率范围里有近似连续的输入阻抗，例如终端菱形天线和波浪天线。

Using the lower frequency antenna, data of the deep and thick layer of riprap (downwards to 35 m) can be received, hut the mixture of silt and stone in the bottom cant he differentiated.

检测表明，低频天线可用于检测深厚抛石层，取得深达35 m左右抛石层底部反射波信息，但无法分辨出底部泥石混合层。

Writing in the Journal of Nutrition, they said the fructose-fed rats showed changes n the collagen of their Rod antenna and Road roller .

他们在《营养学杂志》上发表文章说，那些吃了果糖的老鼠的皮肤和骨质中的胶原蛋白发生了变化。

Keywords Rocket bomb;fuze;remote setting;wireless data transmission;plasma;antenna design;setting window;anti-jamming

火箭弹；引信；遥控装定；无线数据传输；等离子体；天线设计；装定窗口；抗干扰

An FCC term for "the square root of the ratio of the root- mean-square free space field intensity produced at one mile in a horizontal plane in micro- volts per meter for one kilowatt antenna input power 137.6 mV/m."

FCC术语，"水平面1英里处产生的自由空间场强的均方根比值的平方根，表示为微伏每米。输入功率为1千瓦的天线功率增益为137.6 mV/m。"

Abdomen is rear add bag of white waxiness egg, there is line of backbone state upheaval on bursa 14 ～ 16, without the wing, antenna is black Brown, 11, every have black bristle; Mouthparts is small, rostellum 2, extreme has a lot of short-haired pelt, buccal shot is not long.

腹部后方附白色蜡质卵囊，囊上有脊状隆起线14～16条，无翅，触角黑褐色，11节，每节都有黑色刚毛；口器小，喙2节，末端有许多小毛，口针不长。

This paper proposed a new QoS control method of voice service. On one hand, it uses adaptive transmission strategy, such as AMC, power control, sub-carrier allocation and antenna selection, to realize the reliable transmission in physical layer. On the other hand, it adopts ARQ and RRM in the data link layer to control the time delay and jitter of voice services.

本文提出的语音业务QoS的控制方法，一方面通过物理层的自适应传输策略，如调制编码方式、功率控制、子载波分配和天线选择等相关技术来实现物理层的可靠传输；另一方面，通过链路层的ARQ技术和无线资源管理策略来控制语音业务的时延及时延抖动。

Leather made from the hide of the African and Asian ruminant.

羚皮革：非洲，亚洲的羚羊皮做的皮革●antenna n。

In order to implement the satellitic data transmission, the antenna must target and track the goal precisely.

要实现卫星的数据传输，天线需要对目标进行精确的定位与跟踪。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。