“superheterodyne receiving”的概念、定义、翻译、参考文献-科学参考

单词	superheterodyne receiving
释义	superheterodyne receiving Encyclopedia 工学【通信基础理论】释 superheterodyne receiving超外差接收将接收到的已调高频信号（即调制后的高频信号）送到混频器，然后与本地振荡器所产生的高频信号进行混频，在其输出端得到的波形包络形状与输入高频信号相同，但频率却降为某一固定中间频率（简称中频）的信号接收技术。
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