With the laser scanning vibrometer, based on the Doppler effect, the muzzle vibration velocity is measured.

炮口振动速度测试可以采用激光测振仪，它是基于多普勒原理的激光非接触测振技术而研制的。

youdao

The Doppler effect is widely used in astronomy for measuring the velocity at which distant stars or nebulae are approaching or receding.

多普勒效应在天文学上广泛应用于测量距离遥远的恒星或星云靠近我们或离开我们速度。

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Suddenly they do the Doppler effect where they turn their backs to you, in a way, and they're marching away from you and you hear very little sound.

突然，他们也产生了多普勒效应，当他们转身背对你时，当他们背离你前进时，你会听到一种很微弱的声音。

youdao

The Doppler effect explains changes in the length of light waves or sound waves as they move toward you or away from you.

VOA: special.2009.04.29

Suddenly they do the Doppler effect where they turn their backs to you, in a way, and they're marching away from you and you hear very little sound.

突然,他们也产生了多普勒效应,当他们转身背对你时,当他们背离你前进时,你会听到一种很微弱的声音

耶鲁公开课 - 聆听音乐课程节选

It also is known as the "Doppler effect."

VOA: special.2009.04.29

This exploits the Doppler effect familiar when a siren changes pitch as the fire engine on which it is mounted speeds past you.

ECONOMIST: Is there anybody out there?

This is a reddening of a galaxy's spectrum caused by the Doppler effect (the effect that causes a police-car siren to drop in pitch as the car drives away).

ECONOMIST: Astronomy

Just as you could use the Doppler Effect to pinpoint the location of a satellite flying overhead, you could also employ satellite signals to find your own location on the ground.

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