| 单词 | doppler effect |
| 释义 | > as lemmasDoppler effect Doppler effect n. the effect on sound, light, or other waves of relative motion between the source of the waves and the observer: the observed frequency of the waves is higher or lower than the emitted frequency according as the source (or the observer) is moving towards or away from the observer (or the source).extracted from Dopplern.< as lemmas |
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