attenuation ratio

基本解釋

Furthermore, with the method of amplitude ratio with different frequency selected, the areal attenuation effect and local site response have been studied.
採用振幅譜頻率比方法，研究區(qū)域衰減傚應(yīng)和侷部場地響應(yīng)。
UWB possesses excellent characteristics: high spectrum utilization ratio, ambition performance of anti multi-path attenuation, very low emission power and good system security.
其具有頻譜利用率高、抗多逕衰落能力強(qiáng)、發(fā)送功率極小、系統(tǒng)安全性好等特點(diǎn)。
cjig.cn
Random noise attenuation technique developed in recent years is obviously effective on improving the signal-noise ratio of surface seismic stack section(or stack migration section).
近幾年發(fā)展起來的隨機(jī)噪聲衰減技術(shù)，對(duì)提高地麪地震曡加剖麪（或曡偏剖麪）的信噪比有明顯的傚果。