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

• 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。
• At some stage he left the Artillery to command a radar unit.
  有段时间他离开了炮兵部队去指挥一支雷达小分队。
• 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。
• But a thorough study of electricity in the atmosphere was not possible until the development of radio and radar.
  但对大气中电的全面研究直到研制出无线电和雷达之后才成为可能。
• 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 jam principle is analyzed using the carrier-free UWB radar as the study object.
  以无载频超宽带雷达为研究对象，分析了该干扰新技术的机理。
• 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。
• The optical radar is one of the main equipments in shooting range test outside trajectory measurement system.
  光学雷达是靶场试验外弹道测量系统中的主要设备之一。