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調頻廣播
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調頻廣播
tiáo pín guǎng bō
高频振荡频率随音频信号幅度而变化的广播技术。抗干扰力强,失真小,设备利用率高,但所占频带宽,因此常工作于甚高频段。采用调频方式所进行的无线电广播。它所占用的频带较宽约一般调幅广播的十倍,音质清晰,传真度高,不易受其他信号的干扰,故常用于超短波频段,在收音机刻度盘上的简单标志是F.M.。
调频广播
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assets depreciation rangeADR
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更新时间:2025/3/18 9:26:31