| 释义 |
DEFINITIVE EXAMPLES 权威例句〔red shift〕An increase in the wavelength of radiation emitted by a celestial body as a consequence of the Doppler effect.红移：天体发出的辐射波长的增加，是多普勒作用的结果美国传统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。剑桥国际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。剑桥国际 |