radar

'reidә

四级六级考研托福雅思 Collins 2

n. measuring instrument in which the echo of a pulse of microwave radiation is used to detect and locate distant objects

n. 雷达, 无线电探测器
[计] 雷达图

Collins 星级

7,112

BNC 频率

4,780

使用频率

radar 是一个合成词，由 radio 和 detection 组合而成，表示利用无线电波进行探测的设备。

例句

1. The airplane was detected by radar before it landed.

飞机在降落前被雷达探测到。

2. The radar system helps track storms in real time.

雷达系统帮助实时追踪暴风雨。

3. Police use radar to monitor the speed of cars on the highway.

警察使用雷达监控高速公路上汽车的速度。