... attenuation ratio 衰减比 attenuation region 衰减区，衰减范围 attenuator 衰减器；减温器，减压器，消声器，消音器，衰耗器 ...
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平缓衰减区中的平均电子密度约为中性分子密度的十万分之一，并且可以覆盖较大范围。
The average electron density in linear attenuation zone is about 10 ~ (-5) of neutral particle density, and can overcast wider area.
在低阻区，高频电磁方法的结果一直是令人失望的，其原因是这种介质使信号严重衰减。
But in regions of lower resistivity HFEM results have been disappointing due to severe attenuation of source waves by the medium.
本文主要讨论潜在震源区地震参数的确定、地震动衰减规律的预测以及地震发生模式的选定。
In this paper, we mainly discuss the determination of specific parameters of potential sources, the prediction of attenuation laws of ground shock and the selection of occurrence model of earthquake.
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