同步期伴音传送(电信)
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sound-in sync 同步传声
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The sound track is not in sync with the picture.
声迹与画面不同步。相反。
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FM sound sync-broadcasting has overlapped service zone, the same carrier frequency and the source of the program, which can broadcast in-phase at the same time.
调频同步广播系统是具有重叠服务区，使用同一载频和同一节目源，同时同相位广播的调频发射技术。
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