低频

Elaborate hammering and lathing work our secret alloy into versatile cymbals with a wide-ranging blend of high and low frequencies that can be mellow or intense.

秘密合金经过精心的锤打和车床便可使醇厚的低频或突出的高频融合在这多才多艺的镲片当中。

By building ARmodel,the article indicates the relation of wear between samples,and gets the conclusion: the energy of lathing system changes from high frequency to low frequency.

得到如下结论：随着磨损量和工作时间的增加，切削系统的能量由高频向低频转移。

The image is first reduced in dimension by Gaussian pyramid, and the Hu moment is applied to the fixed sized overlapping blocks of low-frequency image. The eigenvectors are lexicographically sorted. Then, similar eigenvectors are matched by a certain threshold value. Finally, the area threshold value is proposed to remove the wrong similar blocks. The mathematical morphology operations are performed to locate the tampered part.

该算法首先将图像进行高斯金字塔分解，将低频图像进行块分解，提取每块的Hu矩不变特征，并将特征向量排序，然后为每个特征向量搜索符合阈值的相似特征向量；最后利用区域面积阈值去除错误的相似块，并结合数学形态学定位篡改区域。

The Lexis LF-A has been spotted on the road again.

数据库低频一个已发现的道路上了。

And it has a wide foreground in the field of processing of libration signal.

目前可用于桥梁横向低频位移测量的振动传感器主要有两

The impedance spectra comprise of a semicircle at high frequency and a line at low frequency.

MH-Ni电池的阻抗图谱包含一个高频区的半圆和低频区的直线。

Some possible applications of wide-area measurement system in power system are gathered up, including applications in static analysis, recording dynamic procedures of the whole power network and post-contingency analysis, identifying and calibrating the dynamic model of power system, transient stability prediction and control, voltage and frequency stability monitoring and control, analyzing and damping the low frequency oscillation, global feedback control, fault location and parameter measurement o...

综述了广域测量系统(Wide-Area Measurement System，WAMS)在电力系统稳态分析、全网动态过程记录和事后分析、电力系统动态模型辨识和模型校正、暂态稳定预测及控制、电压和频率稳定监视及控制、低频振荡分析及抑制、全局反馈控制、故障定位及线路参数测量等方面的应用。通过这些应用可以看到，WAMS给电力系统分析与控制提供了新的视角和解决方法，值得深入研究。

The maxima of low-temperature internal friction peaks plot a symmetrical peak-like curve at logarithmic frequency spectrum and the peak-like curve shifts toward high frequencies with the increase of heating rate, indicating that phase transition relaxation time decreases; the maxima of high-temperature internal friction peaks exhibit a linear relation to the reciprocal frequencies, and as the heating rate increases its slope rises, which implies that the heating rate drives the normal movement of phase interface further in low-frequency measurements.

低温内耗峰峰值与对数频率呈现峰形函数关系，随升温速率的增加，频率峰向高频方向移动，相变弛豫时间减小；高温内耗峰峰值与倒数频率成直线关系，随升温速率的增加，直线斜率变大，表明低频测量时升温速率对相界面法向运动的驱动作用更强。

This is a comprehensive and inexpensive design for one general low-frequency control system.

对于一般的低频控制系统，该设计方案是一个造价较低的设计方案。

In chapter six, the application of higher order statistics in detection low-frequency noise of transistor is discussed.

第六章研究了高阶统计量在晶体管低频噪声检测中的应用。

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。