| 单词 | 外差 |
| 释义 | 〔heterodyne〕Having alternating currents of two different frequencies that are combined to produce two new frequencies, the sum and difference of the original frequencies, either of which may be used in radio or television receivers by proper tuning or filtering.外差的：由两股不同频率的交替电流联合产生两个新的频率的，原频率的总和及差拍均可通过适当调频或滤波用于无线电或电视接收〔heterodyne〕To combine (a radio-frequency wave) with a locally generated wave of different frequency in order to produce a new frequency equal to the sum or difference of the two.外差：把（一个无线电频率波）与另一个频率不同的局部产生的电波层混合，以产生相当于原来两个的总和或差拍的新频率 |
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