光学、声学 光学 frequency modulation 调频 ＞无线电物理学＞超高频无线电物理＞释义 frequency modulation 调频 modulated frequency 调频
全称：frequency modulation。缩写：FM 调频
计算机硬件 存储设备 释文 frequency modulation, FM 调频制
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