衰减的

The optimum design of detector arrays for the attenuation of surface waves and of ambient noise is a complex subject.

为衰减面波和外界噪声作检波器组合的最佳设计是一件复杂的事情。

This paper investigates the effects of high temperature on ultrasonic velocity, refraction angle of inclined probe, ultrasonic attenuation, emitting strength of ultrasonic probe and defect detectable ratio, and provides practical methods of high temperature ultrasonic inspection for vessels and equipment, as well as concrete inspection procedure and key operational points.

文章通过研究高温对超声波声速、斜探头折射角、超声波衰减、探头发射超声波强度以及缺陷检出率的影响，提出了对容器设备进行高温超声波检测的方法、具体检测步骤和操作要点等。

On the basis of wavelet transform and S transform,through popularizing basic wavelet, the basic wavelet containing 4 kinds of unknown parameters (amplitude, energy attenuation rate, energy-delay time and apparent frequency ) was constructed, realizing generalized S transform.

在小波变换和S变换基础上，通过对基本小波的推广，构建含有四类待定参数(振幅、能量衰减率、能量延迟时间及视频率)的基本小波，实现广义S变换。

Body waves have a higher frequency range and attenuate more rapidly than surface waves.

体波频率范围及衰减有更高的速度比水面的波浪。

If we were to try burying our detectors in order to attenuate the surface waves, we would soon grow discouraged

如果企图用埋置检波器的方法来衰减面波，很快就会发现这种做法是徒劳的。

Furthermore, we separate the contribution from the leakage and cutoff effect to the attenuation constant, and then deduce an expression to determine the leakage in the reactive region.

根据该准则我们还进一步分离出泄漏效应和截止效应各自对衰减常数的贡献，并推导出在截止区内表征辐射能力大小的表达式。

According to the importance of frequen-cy in power system operation,the authors tested andcalculated the frequency attenuation time constant Tfand the static load frequency coefficient KL,whichcharacterinze the frequency variation of power system.

根据电网频率运行的要求，对表征电网频率特性的频率衰减时间常数Tf、静态负荷频率调节系数KL进行了试验研究和理论分析计算。

It proved that the primary rain attenuation influence factor is the minute rainfall rate of 0.01% time.

这同时也说明了，影响降雨衰减最主要的因素是0.01％时间的分钟降雨率。

The attenuation factor, again, depends on the scale of the scene and aesthetical factors.

衰减系数取决于场景的大小以及审美的标准。

An attenuation factor is computed that compares the measured signal strength to the data embedded in the signal.

比较测得的信号强度和信号中包含的数据，计算衰减因子。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。