radar-主題

radar

['reidɑ:]

n. 雷達

例句與用法：

They picked up the yacht on their radar screen.

他們在雷達屏上看到了那艘遊艇。

They were able to position the yacht by means of radar.

他們能夠用雷達測定快艇的方位。

The radar scanned the sky for enemy planes.

雷達密切監視天空，搜索敵機。

The watchtower followed the aircraft by radar.

瞭望塔通過雷達追蹤這架飛機的行蹤。

英文解釋:

名詞 radar:

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

同義詞：microwave radar, radio detection and ranging, radiolocation

以上來源於大辭典