| 释义 |
Dop.pler ef.fectHdBp7lE5, $5dB:7plLn [U]specialized a change that seems to happen in the rate of sound or light wave production of an object when its movement changes in relation to another object多普勒效应An everyday example of the Doppler effect is the apparent change in the pitch of an alarm bell as you drive past it.一个多普勒效应的生活实例便是，当你的汽车驶过时，警铃声的音高有明显的变化。The Doppler effect is used in calculating the size of the universe.多普勒效应可用来计算宇宙的大小。
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