单词	Doppler effect
释义	English American Doppler effectnoun [ U ] uk/ˈdɒp.lər ɪˌfekt/us/ˈdɑː.plɚ ɪˌfekt/also Doppler shift 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 Thesaurus: synonyms and related words Physics: particular theories & concepts chaos theory cryogenics dark matter dynamics element kinetics locomotive momentum Planck's constant quantum refraction relativity space-time spring constant string theory time warp wormhole Doppler effectnoun [ U ] us/ˈdɑp·lər ɪˌfekt/ physics a change that someone experiences in the frequency of waves, for example, of sound or light, when the distance between that person and the origin of the waves changes
随便看	the darkest hour is just before the dawn the dawn of sth the DAX the day before yesterday the Day of Atonement the Day of Atonement the Day of Judgment the Day of Judgment the days the days/week(s)/year(s) to come the days/week/yearto come the days/weeks/years to come the DBIS the dead the deaf the death of sb/sth the death penalty the Decalogue the deceased the deceased the decencies the deep the Deep South the defence the delights of sth