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单词
guard band
释义
WordReference Random House Unabridged Dictionary of American English © 2024
guard
′
band′,
[
Radio.
]
an unassigned range of radio frequencies either just above or just below the band of frequencies required for the signal transmitted by a broadcasting station. It helps to prevent interference in receivers between signals from different stations.
1955–60
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更新时间:2024/9/21 16:21:15