英语词汇echo attenuation ratio的读音、用法、中文释义、短语词组及例句-英汉双解词典

单词	echo attenuation ratio
释义	echo attenuation ratio [?ek?u ??tenju?ei??n ?rei?i?u] 释义 [计]反射衰减率，回波衰减率行业词典计算机反射衰减率，回波衰减率???
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echo attenuation ratio