High-frequency band-pass filters(several hundred MHz) are used for Channel selection in telephone central offices.
高频带通滤波器（几百MHz）用于电 话中心局的信道选择。
During a seven-day auction on eBay that ended on May 29, Novocin says he sold four items, including an X-Band Weather Radar Modulator for and a high-frequency radio circuit card for .
最后，经过七天的竞价，诺沃辛卖出了四件零件，包括以500美元的售价卖出一个雷达调节器和以32美元卖出一个高频无线电电路板。
ADSL is a branch of DSL technology, but also the use of ordinary telephone lines to transmit data, but it is used in high frequency band than the voice.
ADSL是DSL技术的一个分支，同样也是使用普通电话线路来传输数据，但它使用的频率要比语音波段高。
Approximate coefficients in low frequency band of two images and the average over absolute wavelet packet coefficients of high frequency brand form a fused coefficients matrix.
对两幅图像低频波段的逼近系数取均值，对高频段选取绝对值大的小波包系数，得到融合系数矩阵。
At high frequency band, the frequency response error of a peak detector is the high frequency resonance error mainly produced by the distributive parameter.
峰值检波器的频响误差在高频段主要是由分布参数产生的高频谐振误差。
Wide frequency spectrum can be received and high probability of intercepting can be got and the simultaneously attend signals can be processed by wide band radar EW reconnaissance digital receiver.
宽带雷达对抗侦察数字接收机具有较宽的瞬时频率覆盖特性和较高的截获概率，并能处理同时到达的多个信号。
The circular region F-norms in low frequency band of wavelet transform is used as color feature of the image and the energy ratio of high frequency band is used to form texture descriptor.
颜色特征采用整数小波低频系数矩阵中环形区域的F -范数，纹理特征则采用高频部分的能量比值。
Narrow band intermediate frequency digital receiver has been widely used in radar EW reconnaissance. At present, the high speed signal processing is the key point of its researching.
窄带中频数字接收机在雷达对抗侦察中得到了广泛应用，其高速信号处理技术是目前研究的重点。
As a result, we accurately estimate the effective signals in high frequency band and better the noise suppression, thus broadening the effective frequency band.
这样做的结果，使高频段有效信号的估计更加准确，能更好地改善去噪效果，从而达到拓宽有效频带的目的。
Both the noise and the edge belong to high frequency signal, it's hard to pick up with frequency band.
噪声和边缘一样都属于高频信号，很难用频带来做取舍。
To conveniently and accurately evaluate the wind-induced accumulated fatigue damage of high-rise structures in frequency domain, an improved equivalent narrow band method was proposed.
为了在频域内方便准确地估算高耸结构的风振疲劳累积损伤，提出了一种改进的等效窄带算法。
Because of limited frequency band of channel, spread spectrum and MFSK modulations can not resolve that high speed transmission is in contradiction with limited frequency band.
当进行高速水下通信时，由于水下信道的频带有限，扩频和MFSK调制方式无法解决高速率信息传输和可利用信道频带窄的矛盾。
The cymbal hydrophone has small volume and high sensitivity, but its reception performance is not stable enough, with narrow receiving frequency band.
钹式水听器体积小，灵敏度高，但是接收的性能不够稳定，接收频带比较窄。
A frequency selective surface (FSS) is a metallic periodic structure with frequency selective properties. Depending upon design, it may be low-pass, high-pass, band-pass, band-stop filter.
频率选择表面（FSS）是具有选择频率功能的一块金属周期结构，它可以被设计成低通、高通、带通、带阻滤波器。
The noise from injection and bubbling has the character of wide frequency band and high noise level.
喷注与鼓泡产生的噪声具有频带宽、声压级较高的特征。
The frequency parameters are set in highly denseness in high energy frequency band, but in sparse denseness in low energy frequency band.
在能量高的频段密集选取频率参数，相反在能量低的频段稀疏选取频率参数。
After 3d high resolution seismic data of Yacheng 13-1 structure were inversed using restriction sparse pulse inversion, data volume of full-frequency band absolute wave impedance was gained.
利用约束稀疏脉冲反演方法对崖城13—1构造的高分辨率三维地震资料进行了反演，得到了全频带的绝对波阻抗数据体。
The nonlinear dispersion relation shows that a high wave power results in a reduction of frequency band of MSSW.
获得非线性色散关系，揭示了传播功率致使静磁表面波频带压缩。
This paper analyzes and calculates several interfering parameters of the wide-band and high-frequency noise caused by some type of interfering machines.
本文对某型干扰机产生宽带高频噪声的几个干扰参数进行了分析和计算。
The serial product features include wide frequency band, low VSWR, high attenuation accuracy, small dimensions, high power, excellent capacity in anti-burnout etc.
该系列产品具有频率范围宽、驻波系数低、衰减精度高、体积小、功率大、抗烧毁性能好等特点。
Current mode theory enables design of super wide frequency band, super high speed analog switches by introducing circuit structures and principles.
采用电流模理论和电流模电路设计超宽频带、超高速度模拟开关。
The millimeter wave (MMW) Inter-pulse stepped frequency radar is a type of wide-band high-range-resolution radar.
毫米波脉冲频率步进雷达是一种宽带高距离分辨率雷达。
Wide frequency band, high power, low losses and wide temperature coefficient are the developing trends of microwave ferrite materiel.
微波铁氧体材料的发展趋势是宽频带、功率、损耗、温度系数。
Gradual shifting of the spectral band toward high-frequency presents upward thickening succession, which means the upward net depositional rate decrease.
能谱带逐渐向高频方向转移，反映一个向上变薄的序列，即向上净沉积速率减小。
Assisted by other bands high frequency geometric information, reconstruct noise band image with wavelet reconstruction filter to de-noise noise band image.
以其他波段的几何信息辅助噪声污染波段重构，经过相应的小波重构滤波器滤波，获得该波段图像的重建以进行消噪。
Booster compressor noise has the characteristics of wide frequency band, intense low frequency sound and considerably high total sound pressure level.
增压机噪声具有频带宽、低频声强烈，且总声级又相当高的特性。
The design of high frequency input connector is especially important for the development of wide band gigahertz TEM cell (GTEM cell).
研制宽频带的吉赫横电磁波传输室，其高频输入接头的设计尤为关键。
By using the plane wave expansion and finite-different time-domain (FDTD) methods, we can find a larger absolute band gap in the low and high frequency.
通过运用平面波展开方法以及有限差分时域(FDTD)方法进行分析，可以明显地发现，在低频和高频区域增大了光子晶体的光子禁带。
At different wave band and polarization, the high frequency RCS of a model was computed with the graphical electromagnetic computing (GRECO) method.
在不同波段不同极化下，应用图形电磁计算(GRECO)法计算了某模型的高频雷达散射截面(RCS)。
At different wave band and polarization, the high frequency RCS of a model was computed with the graphical electromagnetic computing (GRECO) method.
在不同波段不同极化下，应用图形电磁计算(GRECO)法计算了某模型的高频雷达散射截面(RCS)。
应用推荐