| 单词 | heterodyne whistle |
| 释义 | heterodyne whistle [`hed·ǝ·rǝ´dīn `wis·ǝl] COMMUNICATIONS A steady, high-pitched audio tone heard in an ordinary amplitude-modulation radio receiver under certain conditions when two signals that differ slightly in carrier frequency enter the receiver and heterodyne to produce an audio beat. Also known as heterodyne interference. |
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