| 释义 |
radarra‧dar /ˈreɪdɑː $ -ɑːr/ ●○○ noun   radarOrigin: 1900-2000 radio detection and ranging - Enemy radar must have detected our approach.
- And the overlap could be especially acute in this deal, because both companies are major producers of missiles and radar.
- Nor are the skies above frequented by commercial airlines, which eliminates interfering radar signals.
- Rough seas reflect radar signals, producing false echoes which can blind an old radar such as the Type 992.
- The aircraft had begun its descent to Houston Intercontinental Airport when it disappeared from radar screens.
- The idea behind radar was to send out radio waves and listen for echoes from enemy craft.
- The same radar data that permit determination of the rotation speed of Venus also permit us to prepare maps of its surface.
- Then, the race was for radar.
► a radio/electrical/radar signal· A transmitter connected to the door bell sends radio signals to a portable receiver. ADJECTIVE► new· In recent years a powerful new radar technique for determining the shapes of NEAs has become available. NOUN► equipment· The need to use range-Doppler methods is obviated where radar equipment is carried near to a planet by means of a spacecraft. ► screen· The single-engine Socata vanished from radar screens after taking off for Mull from Blackpool on Saturday.· Without this information, the controllers only see a radar screen with signals that indicate planes.· The weatherman's just lost it off the long-range radar screen.· The aircraft had begun its descent to Houston Intercontinental Airport when it disappeared from radar screens.· The pilot said he was changing direction - and vanished off radar screens.· Our spirits surged when senior forecaster Llyle Barker pointed at a radar screen.· So you figure that he either hit his approaches stiff - or off the radar screen.· Some scholars say it will be regarded as only the slightest of blips on the radar screen of history. ► signal· Similarly, how does a moth perceive the ultrasonic acoustic radar signals of a bat?· Nor are the skies above frequented by commercial airlines, which eliminates interfering radar signals.· But do they see the radar signals, too?· A transponder is a device that emits radar signals identifying and locating aircraft for air traffic controllers.· Rough seas reflect radar signals, producing false echoes which can blind an old radar such as the Type 992.· Clustering applications would include things like character recognition, sonar / radar signal classification, and robotic control.· First of all the radar signal was received and retransmitted by the Viking Lander sitting on the Martian surface.· We can think of radar signals as a series of pulses, but each pulse has a so-called carrier frequency. ► station· Probably due to the confusion no one thought of asking the radar station at Opana in which direction the enemy aircraft headed.· They knew that the story of the radar station at Rudow was a blind.· He had keyed up all the radar stations and they would be alerted the moment anything significant was plotted. ► system· They provide vital back-up service for EF1-11s used to disable the enemy's early warning radar systems.· Of 15 new Arleigh Burker destroyers with Aegis radar systems, about half will be built at Bath.· A Northrop GrummanHughes combination would control the great bulk of the market for airborne radar systems.· RaytheonHughes would dominate the markets in air-to-air and air-to-ground missiles, as well as ground radar systems. ► tape· A malfunctioning transponder would leave dots on the radar tape, not a streak, according to the manual, Schulze said. ► trap· And the beam can't be spotted by drivers who use radar trap detectors.· At some radar traps, nearly 80 percent of speeding tickets went to out-of-state drivers.· I was pinched for dangerous driving last month, in a radar trap. VERB► disappear· The aircraft had begun its descent to Houston Intercontinental Airport when it disappeared from radar screens.· Your game is disappearing from the radar screen of national interest at an alarming rate.· And they believe it made course corrections that no autopilot could make before it disappeared from radar. ► use· The Doppler Effect is used in police radar speed-traps for motorists.· The station will keep operating using two tracking radar dishes and a 40-foot-diameter telemetry antenna dish.· We were trained in nightfighter techniques, using airborne radar.· The small forward sinks 3-pointers as if using radar.· Read in studio Archaeologists are using radar to survey a city's historical past.· Radar mapping is carried out by using a very powerful radar transmitter to send bursts of radar power at the target.· Harris, who was driving a Peugeot 309, was caught by police using a radar gun.· The first would use the same radar and missiles, but would replace the interceptor with a nuclear bomb. 1[countable, uncountable] a piece of equipment that uses radio waves to find the position of things and watch their movement → sonar:  The coastline can now be monitored by radar. We could see the plane quite clearly on the radar screen.2on somebody's/the radar (screen) if something is on your radar, you have noticed it and are giving it some attention: This is one of the issues on our radar.3fly/slip under somebody's/the radar to not be noticed by someone: How did this band slip under the radar? |