英语词汇“directional filter”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	directional filter
释义	directional filter noun : an electric filter designed to divide the band of frequencies available for carrier currents about midway using one portion of the band for east-to-west transmission and the other portion for west-to-east transmission
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