Along with the sands, the plane also has radar in its nose, doppler radar in its tail.

除了这个备之外，飞机机头还装有雷，机尾装有多普勒雷。

Researchers have developed a device that uses low-powered Doppler radar to decode the unique geometry of a user's heart...

研究人员研发了备，可以利用低率的多普勒雷析用户心脏的独特几何形状，以。

The plane also has radar in its nose, Doppler radar in its tail.

飞机上还有雷，机头有雷，机尾有多普勒雷。

Unlike a tornado warning where Doppler radar can see the rotation and issue a warning before the tornado, an earthquake warning happens when the earth is already shaking.

不像预测龙卷风的多普勒雷可以观测气旋运动并在龙卷风形成之前预警，地震预警则是从地球开始撼天动地之后才发出。

However, in 1965, astronomers used Doppler radar to observe Mercury and directly measure its spin and they got a surprise: its day was only 59 Earth days long, not 88.

然而，在1965年，天文学家使用多普勒雷观察水星，并直接测量了它的自转周期，他们大吃惊：水星上的天只有59个地球日，而不是88个。