查询词典 in-line antenna

The quadrifilar helix antenna is widely used in the space communication, as it has globe symmetry band and good circular polarization.

四臂螺旋天线由于其优良的圆对称半球波束特性，良好的广角极化特性，在空间通信中得到广泛的应用。

The aspect of discuss in this paper such as anisotropic dipole antenna radication field numeral calculation and wave parameter calculation has little documentation systematic introduce at the present.

在研究过程中，涉及到复宗量贝塞尔函数的数值计算，由于它对本文的结果影响较大，且各种数学手册无虚宗量贝塞尔函数值可查，所以对其进行了较为详细的研究。

ATbstract: he small frequency modulated transmitter, the power is small, may launch the wireless signal, accepts the signal with the radio, satisfies certain transmission range, Circuit easy system, low cost, power output does not exceed 5-8 mW, firing range to be in the housing area of about 100 meters, with an ordinary FM radio receivers, demonstrating his superb sensitivity and clarity, the most circuit design challenges of the part is only used 3 V power supply, and half-wave antenna will be such a launch capability.simultaneously can input the sound signal, may install modulation surveillance table to serve as the monitoring device, although the power is not very big, but should the interference protection normal radiobroadcasting signal.

小型调频发射机，功率小，可以发射无线信号，用收音机接受信号，满足一定的发射距离。电路简单易制，造价低廉，输出功率不超过5－8mW，发射范围在房屋区可至100米左右，用一部普通的FM收音机接收，显示其灵敏度和清晰度俱佳，电路设计中最富挑战性的部份就是只需用3V电源和半波天线便有如此的发射能力。同时能够输入声音信号，可安装调制监视表头用作监视器，虽然功率不是很大，但是应该防止干扰正常的无线广播信号。

In anFDD wireless system, the duplex spacing between uplink and downlink islarger than the coherence bandwidth of the mobile radio channel, thus theuplink and the downlink small-scale fading is uncorrelated. Moreover, thearray response is correlated with the frequency of the signal carrier. So it isimpossible to resue the uplink weights for downlink beamforming. As aresult, the application of smart antenna for the downlink is a difficult problem.

在频分双工系统中，由于上、下行载波的频率差大于相干频带，上、下行信道衰落是不相关的，而且阵列响应也与信号的载波频率有关，因此，上行信道不能直接用来估计下行信道，故智能天线应用于下行链路是一个难点。

The olfactory receptors in the sensilla of the antenna, maxillary palps and proboscis respond to the odors from the environment.

气味分子与嗅觉气味结合蛋白和气味受体的结合所启动的一系列生化反应产生神经动作电位。

Furcifera was observed with scanning electron microscope. Three types of sensilla and a kind of sensilla cluster were observed on the antenna of the adult, and no morphological difference was found in these sensilla between the male and female adults.

结果表明，白背飞虱成虫触角上有3种类型的感器--毛形、刺形和耳状感器，以及由毛形和耳状感器组成的一种菊花状的感器簇，且这些感器在雌雄中不存在二型性。

The antenna of master and slave transmitters slacked and liable to be shortened in current.

笼中主发信机和备用发信机天线松弛，易短路。

In order to get high gain, narrow main lobe and low sub-lobe antenna pattern, we synthetize the array pattern with Chebyshev method and Unconstrained method seperately.

本文分别采用切比雪夫综合方法和闭式综合法，对直线阵和圆环阵进厅综合，以求得到增益相对高、主瓣窄，副瓣电平低的阵列方向图。

By this model, the target IF return of sum, difference and SLB/SLC antenna channel of the trilobe of frequency-phase scanning 3-D radar could be represented in one uniform expression accurately.

提出了一种三坐标雷达目标中频回波模型及其模拟方法，通过对和、差及辅助通道的目标三联波束回波统一建模，可以全面逼真地模拟频相扫三坐标雷达的目标回波。

All that's involved in "breaking camp" is to crank down the pop-up antenna, unhitch some wires, and stow the outriggers.

系统转移的时候只需收合弹出天线，解开一些电缆，收起支架，机动性非常高。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。