频带

In this system , the signal is decomposed on different frequency bands, then data compression and data recomposition are performed respectively.

该系统对信号首先按不同的频带进行分解，然后分别进行数据压缩和数据重构。

The path length refractor, however, can generate planar wavefronts over a wide operating band.

然而，路径长度折射镜能够在宽频带范围内产生平面波。

Adopting this principle,it is possible to measure wide range AC current precisely and simply. relay protection ; Rogowski coil ; zero drift ; digital signal processing

Rogowski线圈具有结构简单、安装方便、检测灵敏度高、频带宽等优点，但其易受电磁干扰的影响，为此本文提出以Rogowski线圈为传感器结合数字信

This principle can measure large range AC current precisely. relay protection ; Rogowski coil ; zero drift ; digital integrator

Rogowski线圈具有结构简单、安装方便、检测灵敏度高、频带宽等优点，但其易受电磁干扰的影响，为此本文提出以Rogowski线圈为传感器结合数

These mobile and base stations support multiple hyperband operations including, for example, mobile assisted channel allocation, mobile assisted handover, cell reselection, traffic channel assignment, control channel location and registration.

这些移动站和基站支持包括例如移动站辅助信道分配、移动站辅助切换、小区重新选择、业务信道分配、控制信道定位与登记的多个超高频带操作。

Based on the characteristics of short-duration and abrupt of blasting vibration signals and according to measured data from a practical blast,the features of energy distribution in blasting seismic signals were studied by means of the wavelet packet analysis,which had high resolvability and localization,and energy distribution of blasting seismic signals on different frequency bands was obtained.

根据爆破地震信号具有持时短、变化快等特点，结合工程爆破地震监测资料，利用小波包良好的时频局部化性质，对爆破地震信号的能量分布特征进行了分析，得到了爆破地震信号不同频带上的能量分布。

The coupling mechanism, frequency domain characteristics and propagation rule of three propagation paths of partial discharge signal

该方法所采用的测量频段较高，抛弃了以往定位方法中常用的"慢波"，不会受到窄带干扰和低频磁场耦合信号的影响；不存在定位盲区；具有足够的脉冲分辨率；所采用的频带较窄，相应的传感器较易制作。

Then the normalized Shannon energy of the frequency bands was calculated segmentally on time sequencial basis.

利用小波变换多分辨分析将PCG信号分解成不同的频带，然后按时间顺序分段计算频段的规一化香农能量，能量大于某一合适阈值的时刻作为S1和S2 的候选点，结合心音的特点确定S1和S2 。

The measurement of seismometer transfer function is implemented mainly in the low-frequency part, and transfer function in the high-frequency part is obtained with analysis and calculation.

本文对宽频带地震计的频率特性测试是在地震计的低频段进行，对于地震计高频段的频率特性采用理论分析计算获得。

The Model FBS-3A seismometer principle of operation, s-plane pole-zero plot and frequency characteristics are presented.

分析了FBS-3A型等宽频带力平衡地震计的基本原理、零极点的分布和频率特性。

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。