out-of-band attenuation — затухание вне полосы пропускания
freespace attenuation — затухание в свободном пространстве
adjacent-channel attenuation — затухание в соседнем канале
free-space attenuation — пространственное затухание волн
shield attenuation — затухание вследствие экранирования
English-Russian big polytechnic dictionary. 2014.
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