宽频带

But Astropulse searches for broad-band transmissions that are spread across a 2.5 MHz band of the spectrum.

但是 Astropulse 搜寻的是分布在一个长 2.5 MHz 的频率区间的宽频带信号。

There are all kinds of antennas used in EMC test such as biconical antennas, log periodic antenna, helical antenna, ridged horn antenna and etc.

用于电磁兼容试验的宽频带天线有很多类型，如双锥天线、对数周期天线、螺旋天线、喇叭天线等等。

The antenna has a composite structure of a cage and an asymmetric biconical structure. The impedance bandwidth and radiation pattern bandwidth are enhanced, and the tilting and ripping of radiation patterns are eliminated.

将笼型与不对称双锥结构相结合，展宽了天线的阻抗和方向图带宽，抑制了天线辐射方向图在宽频带内上翘或裂瓣。

As the development of modern electronic technology, the high efficiency and broad band acoustic transmitter for the battery using equipments, such as acoustic buoyage, portable underwater acoustic communication equipment and small scale underwater detector is demanded.

随着现代电子技术的发展，一些使用电池供电的水声设备如水声浮标、便携式水声通信设备、便携式水下探测设备等对发射机高效率、宽频带的要求越来越高。

In this paper,finite-difference time-domain method was used to calculate the driving-point impedance of radial disk in circular groove guide.

引言圆形槽波导是一种新型波导，和传统波导相比，具有低损耗、高功率容量、低色散和宽频带等优良特性。

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。

In data communications, a high bandwidth channel.

数据通信技术中，一种宽频带的信道。

Others desynchronized with 5－90 Hz primary depth electrographic after-discharges;(2) primary electrographic after-discharges were driven by primary unit after-discharges in the anterior dorsal HPC;(3) primary unit after-discharges were induced by brief primary electrographic after-discharges; and (4) plasticity of primary electrographic after-discharges and inhibition of single neuron firing were induced by repetitive ATPDH.

非同步性后放电的深部电图癫痫样电活动具有宽频带特征(5－90 Hz)；(2)原发性单位后放-后抑制效应可以引发低频原发性电图后放电，长时程爆发式单位放电可以诱发高频原发性电图后放电；(3)短束原发性电图后放电也可以诱发原发性单位后放电；(4)原发性电图后放电和神经元单位放电的抑制效应具有明显可塑性特征。

For the electrohydraulic position servo systems without high precision requirement, this method is feasible.

在对系统精度无太高要求而仅要求宽频带的电液位置伺服系统，这是一种可行的方法。

The ultrasonic emissive circuit is crucial and will affect the system profoundly.

在该流量计的研制过程中，关键是设计重复频率高的超声波发射电路和较高增益、宽频带的超声波接收放大电路。

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。