Radio. The periodic variation of amplitude produced by the combination of oscillations of different frequencies. Also attributive.
| 单词 | θ198284 |
| 释义 | society > communication > telecommunication > [noun] > signal > frequency or band of frequencies > beat (2) beat1918 Radio. The periodic variation of amplitude produced by the combination of oscillations of different frequencies. Also attributive. Subcategories:— zero beat (1) |
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