频带

On the basis of mode conversion theory, this paper further optimized a better dimension and obtained the regulation about the radius of the circular waveguides, curvature and frequency of bent circular waveguides and the bandwidth.

在模式耦合理论的基础上，优化出了比较好的几何结构，并发现了圆波导半径、弯曲圆波导曲率和频率以及频带宽度之间的变化规律。

The new antenna has the advantages of sim ple structure, easy feeding and a wide frequency range, and circular polarized wave. The characteristics are m uch better than a bifilarbackfire helicalantenna, a shortbackfire antenna and a backfire...

它具有结构简单、馈电方便、遮挡小、频带宽、增益高且易于产生圆极化波等优点，性能远优于带相同接地板的螺旋天线、普通短背射天线以及单线背射螺旋作馈源的短背射天线。

This means that a broad band pulse that was strong and coherent when it set on its way will be smeared across a time-span of several milliseconds when it is received on Earth.

这就意味着本来在出发的时候强烈而一致的宽频带信号在到达地球的过程中会逐渐地被拖成几毫秒的长度。

It is suitable to use for coding any spectral domain and can code colour and multispectral images with any number of bands.

它适合用于编码任何谱域和可代码颜色和多光谱图像与任何数量的频带。

In data communications, a high bandwidth channel.

数据通信技术中，一种宽频带的信道。

For the SBR encoder part, we propose a fast transient detector and an efficient decimation structure.

针对频带复制编码器部分，我们提供了快速的暂态讯号侦测器与有效率的降频滤波器结构。

The mulitresolution analysis of wavelet can decomposite signal on different Scales.So it has the ability of processing for signal in frequency-band,which is very useful to analysis the details of signal on a given frequency-band,to build up the identification features of signal and to cancel the signal noise.

小波多分辨率分解能够将信号在不同的尺度上展开，因而具有对信号按频带进行处理的能力，这对于分析特定频段上信号的细节，建立表征识别故障信号的特征以及清除信号的干扰与噪声等方面具有十分重要的意义。

A novel microwave six-port network orthogonal frequency division multiplexing demodulator is presented in this paper.

该文提出了一种新的基于射频六端口网络的多频带OFDM解调器。

The infrared dichroism of a particular vibration of known origin has been used to give valuable information about molecular orientation.

已知基因特有振动频带的红外二色性，可以提供分子定向的有价值资料。

The influences of the dielectric constant and dielectric thickness on the small signal gain are calculated.

分析表明介质层的加入虽然使慢波结构的增益有所降低，但其展宽了慢波结构的频带。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。