radar

英 [ˈreɪdɑː(r)]

美 [ˈreɪdɑːr]

n.  雷达

复数：radars　

CET4CET6考研TOEFLIELTSTEM4TEM8计算机

Collins.2 / BNC.7112 / COCA.4780

习惯用语

n.

on/off the radar screen
• 受 / 不受人关注
  used to say that people's attention is on or not on sth
• The issue of terrorism is back on the radar screen.
  恐怖主义问题重新受人关注。

牛津词典

noun

• 雷达
  a system that uses radio waves to find the position and movement of objects, for example planes and ships, when they cannot be seen
  1. They located the ship by radar.
     他们通过雷达确定了船只的位置。
  2. a radar screen
     雷达显示屏

柯林斯词典

• N-VAR 雷达;无线电定位装置
  Radaris a way of discovering the position or speed of objects such as aircraft or ships when they cannot be seen, by using radio signals.
  1. 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。
  2. The aircraft was on a flight from Milan when it disappeared from radar screens.
     飞机是在从米兰出发的飞行途中从雷达屏上消失的。

英英释义

noun

• measuring instrument in which the echo of a pulse of microwave radiation is used to detect and locate distant objects
  Synonym:microwave radarradio detection and rangingradiolocation

双语例句

• Sonar, radar, cameras, and other observation platforms acquire the data.
  声纳、雷达、照相机和其他观测平台便可以获得这些数据。
• Radar is used for tracking planes and ships.
  雷达用来追踪飞机和船只。
• The aircraft was on a flight from Milan when it disappeared from radar screens.
  飞机是在从米兰出发的飞行途中从雷达屏上消失的。
• Micro-Doppler provides a new way for radar target recognition while the translation velocity affects the extraction of micro-Doppler information.
  微多普勒为雷达目标识别提供了一种新的思路和方法，而目标的平动速度会影响微多普勒信息的提取。
• The planes are fitted with a device that absorbs enemy radar signals.
  飞机上安装了一个吸收敌方雷达信号的装置。
• The ship's radar scanned the sea ahead.
  船上的雷达扫描了前方的海域。
• The airliner disappeared off their radar.
  那架班机从他们的雷达屏幕上消失了。
• Our radar has pinpointed the planes.
  我们的雷达确定了飞机的精确位置。
• The US crew fixed its radar on the Turkish ship
  美国船员将雷达对准那艘土耳其船。
• The true time delay technology for optically phased array radar using the delay characteristics of optical fiber is presented.
  着重介绍了利用光纤的延迟特性实现光控相控阵雷达的实时延迟技术。