The paper study the problem by constructing theoretical model of diffracted sound attenuation of limited length barrier.
通过建立有限长声屏障的绕射声衰减的理论模型，进行了这方面的探讨。
The results show that the velocity and the relaxation peak of the attenuation moved to low frequencies, and the amplitude of the attenuation decreases, as the correlation length increases.
结果表明，当相关长度增大时，相速度的过渡带向低频方向移动，衰减的弛豫峰随相关长度的增大向低频方向移动，且幅度逐渐减小。
For the electric vector of electromagnetic wave. we discussed its amplitude, wavelength, phase, and attenuation length.
以波的电矢量为例，具体讨论了衰减电磁波的振幅、波长、位相以及衰减波的衰减长度。
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