纵波的衰减系数在地震频带内基本上呈线性变化，而横波的衰减系数在地震频带内除低频外基本保持稳定。
The attenuation factor of longitudinal wave was changing linearly, whereas the attenuation factor of the slow shear wave kept nearly constant with a low frequency on the exploration seismic band.
从不同结构的超宽带平面单极子天线实现频带抑制的方法出发，研究实现频带抑制的基本原理和常用方法。
In this paper, through approach of various band-rejected UWB planar monopole antennas, principles and methods are researched.
从不同结构的超宽带平面单极子天线实现频带抑制的方法出发，研究实现频带抑制的基本原理和常用方法。
In this paper, through approach of various band-rejected UWB planar monopole antennas, principles and methods are researched.
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