衰减系数

Objective: Study the influence of parameters such as attenuation coefficient, velocity of sound, and temperature of medium on focusing sound field.

目的：研究声衰减系数、声速、温度等媒质参数对声聚焦的影响。

Using the two-station methods, the fundamental-mode interstation attenuation coefficients γ was calculated.

利用单源双台法计算出台站之间的Rayleigh面波混合路径衰减系数γ。

We selected 223 pairs of Rayleigh wave from 2681 waveforms recorded by 58 tations in the EuroAsia land and west pacific region. The fundamentalmode surface wave was separated using the phasematch for each seismograms. The fundamentalmode interstation attenuation coefficients γ was calculated using the twostation methods.

根据欧亚大陆及西太平洋地区58个数字地震台站2861个长周期波形记录，从中挑选出符合条件的223对经过中国大陆的双台路径记录，采用相匹配滤波和频率域维纳滤波相结合的方法，计算出双台之间的混合路径衰减系数。

Euphotic depth ; South China Sea ; diffuse attenuation coefficient ; photosynthetically active radiation

真光层；南海；漫衰减系数；光合有效辐射

These phenomena indicate that a lot ofwaxes have crystallized in waxy oil and the oil is jelling.

含蜡原油声速和衰减系数的变化对应于含蜡原油中有大量蜡晶析出与凝结的过程。

The results show that compared with the nonmetal probe, the metal probe has a larger field enhancement effect, and its scattering wave induced by field enhancement has a bigger decay coefficient.

结果显示，相对于非金属探针，金属探针具有更大的场增强效应，并且探针产生的散射波的衰减系数也更大。

Due to the charge process of dusty particles, the electric conductivity, dielectric coefficient and modulus decay of dusty plasma are larger than that of plasma.

结果表明：由于尘埃充电过程，尘埃等离子体电导率、介电常数以及衰减系数都比一般等离子体的大。

Also, we derive the formulation of electric conductivity, dielectric coefficient and modulus decay of dusty plasma by considering the collision process between charged particles and charge process of dusty particles.

利用玻尔兹曼动力学方程和尘埃等离子体的充电方程，考虑等离子体中带电粒子之间的碰撞和充电过程，推导出适合火箭喷焰环境的尘埃等离子体电导率、介电常数以及衰减系数。

In the paper, the writer analyses, discusses and researches the factors which influent the seismic reflection features of all kinds of thin-bedding medium above and, firstly, sums up systemically the laws by which the parameters of the thickness of thin-bedding, the thickness of single layer in the thin-bedding group, the thickness of minor structure, the number of layers in the thin-bedding group, type of incident wavelet, main frequency and decay coefficient influent thin-bedding 〓smic reflection features.

作者在论文中还对影响上述各种薄互层介质地震反射特征的因素进行了详细地分析讨论和研究，首次较全面系统地总结出了薄互层的厚度、薄互层中单层厚度、子结构厚度、薄互层的互层数、入射子波的类型、主频、衰减系数以及地震勘探的采样率等参数对薄互层地震反射特征的影响规律，由此得出以下几点看法和结论

Whenever the NAI generator was turned on or turned off, the coefficient of concentration decay of 30 nm particulate is larger than 300 nm particulate ; the ECR of 30 nm particulate is also larger than 300 nm particulate. With regard to different species particulate, when the NAI

在不同粒径微粒方面，不论是关闭或是开启空气负离子，30 nm 微粒之浓度衰减系数比300 nm 大；30 nm 微粒之有效清净速率(effectivecleaning rate， ECR )亦比300 nm 微粒大。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。