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

除了这个设备之外，飞头还有，尾有普勒。

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

研究人员研发了一种设备，可以利用低率的普勒来解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.

飞上还有，头有，尾有普勒。

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.

不像预测龙卷风的普勒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，天文学家使用普勒观察水星，并直接测量了它的自转周期，他们大吃一惊：水星上的一天只有59个地球日，而不是88个。