| 单词 | Doppler effect |
| 释义 | Word Frequency Doppler effect(ˈdɒplə) noun a phenomenon, observed for sound waves and electromagnetic radiation, characterized by a change in the apparent frequency of a wave as a result of relative motion between the observer and the source Also called: Doppler shiftWord origin C19: named after C. J. Doppler (1803–53), Austrian physicist |
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