查询词典 antenna

Most technically exciting was the FD (Mark-4) radar, with the addition of precision elevation sensing by the addition of vertical antenna lobing.

由于增加了垂直方向扫描，它能提供仰角数据。

It can be in the form of spurious signals If the amplitude of these spurious signals is outside agency-reference-recommendation value, they could cause undue disturbances to other users by entering the receiver systems of other RF bands The generation of spurious signals from a transmitter could be the result of imposed varying antenna loads, noisy voltage-supply lines to the stages of the transmitter, or noncontinuous battery-voltage supply to RF energy from the host.

传输器的不稳定是指传输器产生的伪真信号，这种不稳定性的伪真信号的形成出现，如果它们的振幅超过代理服务器允许值就会进入其它波段的接收系统，干扰使用者，强制性的天线改装，伴有嗓音的电压，断续的供电都会产生为伪真信号，有些电池装配线可接收并解调这种能量，并生成嗓音，然后由经供电线路进入主传输器。

The Constant Modulus Algorithm antenna arrays in the GSM systems are analyzed, CMA arrays can overcome the CCI from the intercells and partially overcome the ISI. The CMA is nonsensitive with the phase shift. The CMA criteria having real part and imaginary part can decreased the reliance of the sequentially temporal equalizer and carrier tracking measures

最后本文研究了CMA阵列天线在GSM移动通信系统中应用的可能性，CMA阵列可以有效地克服共道干扰CCI，部分克服码间干扰ISI，这样一种对相位不敏感的盲算法必须进行后处理，考虑复数的实部和虚部的CMA准则能够减少对后序处理的依赖程度。

The resolution coupling suggests the joint design of waveform, antenna and receiver in the nonsinusoidal radar systrem.

距离、速度和角度的三维耦合关系导出了非正弦波雷达信号波形、天线和接收机联合设计的新思路。

And the nonsinusoidal radar signal's space-temporal correlation means, that from one side there is change of signal form depending on radiation or receiving directions, from other side, there is the change of antenna directivity characteristics depending on signal form.

而天线的时空相干性又表明，非正弦波信号的空间位置影响其时域波形，反过来，距离分辨力也影响角度分辨力。

From the angle of a beam-forming, the cross- range focusing principle of the synthetic-aperture radar based on nonsinusoidal waves is studied. The expressions of antenna pattern for both rectangular signa l and Gaussian signal are presented. Compared with the conventional narrow bandw idth SAR whose cross-rang resolution is determined by the carrier frequency, th e cross-range resolution of the nonsinusoidal SAR is affected by the signal ban dwidth.

为研究非正弦波SAR的方位向分辨力，从波束形成的角度分析了非正弦波SAR的方位向聚焦原理，导出了基于矩形脉冲和高斯脉冲的合成孔径天线阵列方向图表达式，并与常规窄带SAR进行比较，指出影响非正弦波SAR方位向分辨力的主要因素为合成孔径长度和信号带宽，而与信号载频无关。

There were two types for sensilla trichodea. Some bohm bristles formed sensilla cluste r on antenna of nymphae

其中毛形感器有2个类型，若虫触角上的部分蒲姆氏鬃毛组合成弧形感觉簇。

There w ere two types for sensilla trichodea. Some bohm bristles formed sensilla cluste r on antenna of nymphae.

其中毛形感器有2个类型，若虫触角上的部分蒲姆氏鬃毛组合成弧形感觉簇。

Antennal morphology and sensilla of A. suturalis were studi ed w ith scanning electron microscopy. The results showed that four types of sensilla were observed on the antenna of adults and nymphae, including sensilla chaetica , sensilla trichodea, sensilla basiconca, and bahm bristles, and no morphologic a l difference was found in these sensilla between male and female adults.

采 用扫描电镜技术对其触角形态和感器进行观察，结果表明：中黑盲蝽雌雄成虫及若虫触角上分布4种类型的感器，分别为刺形、毛形、锥形和蒲姆氏鬃毛，且这些感器不存在性二型现象。

Antennal morphology and sensilla of A. suturalis were studi ed w ith scanning electron microscopy. The results showed that four types of sensilla were observed on the antenna of adults and nymphae, including sensilla chaetica , sensilla trichodea, sensilla basiconca, and bhm bristles, and no morphologic a l difference was found in these sensilla between male and female adults.

采 用扫描电镜技术对其触角形态和感器进行观察，结果表明：中黑盲蝽雌雄成虫及若虫触角上分布4种类型的感器，分别为刺形、毛形、锥形和蒲姆氏鬃毛，且这些感器不存在性二型现象。

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％。