频带

As a new signal processing method, Wavelet analysis decomposed different kinds of frequency element to non-overlapped frequency bands and this method put forwards an effective way to signal filter, signal-noise separating and character picking-up, especially it has well de-noising capability.

小波分析作为一种全新的信号处理方法，它将信号中各种不同的频率成分分解到互不重叠的频带上，为信号滤波、信噪分离和特征提取提供了有效途径，特别在信号去噪方面显示出独特的优势。

A 360?broad-band analog phase shifter is designed by means of CAD.

摘要该文介绍了宽频带360°模拟移相器的设计理论。

This paper gives a time-synchronization technique bases on GPS time service signal which is used in broad band seismic recorder.

本文给出了一种应用在宽频带地震记录仪中基于GPS授时信号的时间同步技术。

This transmission provides a more continuous power band than a single-stage pump system.

这传输提供了更持续功率频带比单级泵系统。

The left singular vector of the projection has been tracked by the projection approximation subspace tracking algorithm. Then the modal parameters are obtained by least square method. At last an experiment is made using a cantilever beam to prove the efficiency and stability of the method by changing the frequency band of the exciting signal.

通过子空间跟踪算法，不断跟踪计算投影的左奇异值向量，再利用最小二乘法求出系统的模态参数，最后用悬臂梁作为实验模型，通过不断改变系统激励的频带范围，验证方法的有效性及稳定性。

The wavelet packet analysis applied in fault diagnosis system is studied in this thesis. Using simulation fault data, uncalm and time difference vibration signal of sodium pump are decomposed on different levels and frequencies.

对小波包分析应用于故障诊断进行了研究，利用仿真出来的故障数据，将快堆钠泵非平稳时变振动信号分解到不同层次和不同频带上，有效地提取出反映钠泵不同故障的特征向量，在识别中得到了满意的结果。

The wavelet packet analysis applied in fault diagnosis system is studied in this thesis. Using simulation fault data, uncalm and time difference vibration signal of sodium pump are decomposed on different levels and frequencies. To picked-up the eigenvectors reflecting different fault of sodium pump with availability, simulation results have shown its satisfaction in the identification.

对小波包分析应用于故障诊断进行了研究，利用仿真出来的故障数据，将快堆钠泵非平稳时变振动信号分解到不同层次和不同频带上，有效地提取出反映钠泵不同故障的特征向量，在识别中得到了满意的结果。

The network itself, freed of the control of broadcasters and other bandwidth owners, becomes the locus of a new system of distribution, based on association among peers without hierarchical control, which replaces the coercive system of distribution for all music, video, and other soft goods.

网络本身也摆脱了播音员和其他频带所有者的控制，为一种新的分配体系提供了场所；不存在层级控制的友侪间的合作，取代了音乐、影像等软产品的强制分配体系，成为这种新体系的基础。

To study the resistivity structure of crust and upper mantle beneath northern and central Tibet, furthermore, discuss thermal behavior of north and central Tibet lithosphere, superwide band magnetotelluric sounding profiles named line 500 and line 600 which belongs to INDEPTH were finished in 1998 and 1999. The line 500 is from Dêqên to Longwei Co, and the line 600 is from Nagqu to Golmud.

为了研究西藏中、北部壳、幔导电性结构，讨论高原中、北部岩石圈热状态，1998年和1999年在西藏中、北部完成了德庆—龙尾错（500线）和那曲—格尔木（600线）超宽频带大地电磁深探测剖面的研究。

The location of the rupture initiation point, the spatial characteristics of the energy radiation sources and the rupture duration time of the 2001 Wes...

通过分析埃塞俄比亚/肯尼亚地震台阵的宽频带波形资料，获得了2001年昆仑山口西大地震的起始破裂点的位置，能量辐射源的空间分布特征，以及破裂持续时间。

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。