This shows that an earthquake may be predicted by making use of the variations of the frequency attenuation coefficient if the available data are properly processed.
这表明，经过适当处理，是可以根据频率衰减系数的变化来预报地震的。
To facilitate realistic testing, the heart of real is the radio frequency attenuation network, a system designed to simulate realistic field conditions for multiple radios.
为方便实际测试，REAL实验室的核心是射频衰减网络，可模拟多个无线电的真实部署。
Wavelet transform involves the two-variate function of frequency and time, which makes it convenient to simultaneously compensate for attenuation of seismic energy in frequency and time domains.
小波变换作为频率和时间的二元函数，使之可以很方便地在频率和时间域中同时进行地震波能量的吸收衰减补偿。
The existence of various lacunas in bolt bonding system will cause the acoustic wave energy attenuation, phase aberration and frequency dispersion.
由于锚固体系中有不同大小和程度的缺陷，声波在传播过程中将产生能量衰减、相位突变及频散现象。
The buried pipe transfer equation, the frequency character and the attenuation equation of the leak signal are studied.
研究了埋地管道泄漏信号波的传播方程，泄漏信号频率特性以及衰减方程。
The attenuation coefficient decreases with increasing of frequency and the gas density.
衰减系数随频率增加而减小，并且随密度增加而减小。
When frequency is comparatively high, circular tunnel, rectangular tunnel and arched tunnel have same formulation of attenuation rate.
当频率较高时，圆形隧道、矩形隧道和拱形隧道的衰减率表达式是一致的；
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。
The results show that there exist attenuation in all propagation modes along viscoelastic cylindrical tube, and higher-order propagation modes haven't cut-off frequency.
分析结果表明与弹性圆柱管相比粘弹性圆柱管中轴对称波的各阶传播模式均存在衰减，高阶传播模式并无严格意义的截止频率。
B solution, the function of wave attenuation, wave frequency and plasma density is deduced.
解，推导出电磁波能量衰减与电磁波频率和等离子体密度的关系式。
The knowledge about the elastic wave dynamic characteristics such as waveform, amplitude, frequency and attenuation (Qp, quality value) is very limited.
在弹性波动力学特征如波形、振幅、频率及衰减等方面研究薄弱。
The effects on the underwater sound attenuation by the thickness and concentration gradient of polymers were measured in a sound tube at different frequency during the polymers dissolution process.
文中详细研究了梯度高分子溶液在不同频率下，聚合物厚度及梯度结构的变化对反射声衰减效果的影响。
For different plasma-density profiles, the effects of the frequency of EM wave, collisional frequency and plasma density on the attenuation of electromagnetic wave were discussed.
给出了等离子体电子密度线性分布和指数分布时，雷达电磁波的频率、电子碰撞频率、等离子体密度对电磁波衰减的影响。
S-wave inverse quality factor is related to the shear-modulus versus frequency dispersion, which can be used to develop method for estimation of S-wave attenuation.
横波品质因子的倒数与剪切模量一频散有关，由此可以建立横波衰减的估算方法。
As an example, the operation frequency of TT&C and data transmission(TTC&DT) and the attenuation constant of electromagnetic wave through the blackout zone are estimated.
作为一次练习，估算了测控通信系统的工作频率、电波穿过“黑障”区的衰减常数；
At the same time, frequency dependence of scattering attenuation and anisotropic velocity variation makes fracture size deduction from seismic data.
与此同时，各向异性介质中散射衰减及速度随频率的变化，也为通过地震数据分析预测裂隙大小尺度提供了可能性。
Furthermore, with the method of amplitude ratio with different frequency selected, the areal attenuation effect and local site response have been studied.
采用振幅谱频率比方法，研究区域衰减效应和局部场地响应。
Attenuation of the voltage field frequency in the form of OFF and on pulses likewise affects output.
衰减的形式关闭电压领域的脉冲频率和ON同样会影响产量。
We then calculate the difference between the two measurements and generate a numerical factor of how much noise attenuation the headphones are providing over the entire audible frequency range.
我们然后计算二次测量之间的区别并且引起多少噪声衰减一个数字因素耳机提供在整个可听见的频率范围。
Such problems as the attenuation of DC elements and Sine waveform, voltage sag and frequency deviation should be taken into account in order to analyze the transient process in the power system.
要分析电网的暂态特性，还必须考虑衰减直流分量和衰减正弦波，以及电压缺口和频率偏移等问题。
The attenuation coefficient shows approximately linear behaviour with frequency over the frequency range used, and the attenuation slope increases with the void content.
结果表明：超声衰减系数与频率之间存在线性关系，而且其斜率随孔隙率的增大而增大。
Filter is a useful signal can pass while the frequency of the unwanted signal suppression (or attenuation) of the electronic devices.
引言滤波器是一种能使有用信号顺利通过而同时对无用频率信号进行抑制(或衰减)的电子装置。
According to this paper, the frequency and intensity of the signal attenuation on transmission line are mainly depended on the ferromagnetic resonance frequency and eddy current loss.
通过本文的研究表明，传输线上信号的衰减频率和强度主要依赖于磁性薄膜材料的亚铁磁共振频率和涡流损耗。
It has a rather high transmission frequency and low attenuation.
居有较高的传输频率和较低的衰减。
Fixing the spectrum width of the weather echo signals, we change theirs mean Doppler frequency and filter them using regression filter. After filtering, we analyze the attenuation of them.
在天气回波信号谱宽固定的情况下，通过改变天气回波信号的平均多普勒频率，分析了回归滤波器对它的衰减情况。
If a proper non - linear change of the instantaneous frequency is realized, we can get a frequency spectrum whose input is the mean of the reciprocals of bed attenuation coefficients.
如果把瞬时频率作适当的非线性变化，就可以得到一个以地层衰减率的倒数的平均值为输入的频谱。
It is attenuated along the direction of charge density. The higher the CCM frequency is, the sooner the potential attenuation is.
电势分布沿信号电荷密度流方向衰减且电荷载流子倍增寄存器工作频率越高，电势衰减越快。
A new method for digital identification and demodulation of MPSK signals is presented under the condition of the Doppler frequency shift of channel attenuation.
针对衰落信道中广泛存在的多普勒频移现象，本文提出了一种MPSK信号数字化识别解调的方法。
But whether it can reach the prospecting aim by study for inversion of attenuation by earth absorption and by decreasing high frequency noise?
但是否可以通过研究反演大地吸收衰减和减少采集的高频噪声达到勘探的目的呢？
Increasing the eddy-current losses will not change the frequency of attenuation peak, but will increase the intensity of attenuation.
涡流损耗的增加不会改变衰减峰值的频率，但是会增大衰减强度。
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