the Doppler effect
noun /ðə ˈdɒplər ɪfekt/
/ðə ˈdɑːplər ɪfekt/
[singular] (physics)- the way that sound waves, light waves, etc. change in frequency depending on the direction that the source is moving in relative to the person who is observing
| 单词 | the Doppler effect |
| 释义 | the Doppler effectnoun /ðə ˈdɒplər ɪfekt/ /ðə ˈdɑːplər ɪfekt/ [singular] (physics)
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