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汉语拼音：léi dá

英语音译词。意为无线电探测和定位。一般指利用发射和接收反射电磁波发现目标并测定其位置的电子设备。主要组成部分有发射机、天线、接收机和显示器等。按工作状态分脉冲雷达和连续波雷达两类。广泛应用于侦察、警戒、导航、跟踪、瞄准、制导和地形测量、气象探测等方面。

1. [英radar]利用极短的无线电波进行探测的装置。可用来搜索和测定物体位置以及跟踪移动的目标。广泛应用在军事、天文、气象、航海、航空等方面。

   郭小川 《厦门风姿》诗：“望远镜整日在海上搜索，雷达时时在空中寻觅。”

• It was yet another case where the human eye outperformed radar.

  这是肉眼胜过雷达的又一事例。

• The ship'sradar scanned the sea ahead.

  船上的雷达扫描了前方的海域。

• They located the ship by radar.

  他们通过雷达确定了船只的位置。

• The radar beam can track a number of targets almost simultaneously.

  雷达波几乎可以同时追着多个目标.

• They are following the flight of an aircraft by radar.

  他们正在用雷达追踪一架飞机的飞行.

• The ship, with the help of radar, sailed in thick fog.

  船借助于雷达在浓雾中航行.

• Its radar equipment was powered by a nuclear reactor.

  其雷达装置由一核反应堆提供动力.

• All modern vessels of any size are fitted with radar installations.

  所有现代化船只都有雷达装置.

• The pilot homed in by means of radar, despite the poor visibility.

  尽管能见度极差,飞机由雷达导航返航了.

• The radar detected three enemy aircraft in the sky.

  这个雷达发现了三架敌机.

• This radar is operated by an electronic pulse.

  这台雷达依靠电子脉冲来操作.

• The watchtower followed the aircraft by radar.

  了望塔通过雷达追踪这架飞机的飞行.

• Enemy ships were detected on the radar.

  敌舰的影像已显现在雷达上.

• Enemy planes were picked up by our radar.

  敌机被我们的雷达发现了.

• Pilots complained that the radars in the Mirages malfunctioned during conditions of high humidity.

  飞行员抱怨说在高湿度条件下，“幻影”战斗机上的雷达出现了故障。