Толковый словарь английского языка Oxford English Reference - radar
Radar
radar
n. 1 a system for detecting the direction, range, or presence of aircraft, ships, and other (usu. moving) objects, by sending out pulses of high frequency electromagnetic waves. 2 the apparatus used for this. Phrases and idioms radar trap the use of radar to detect vehicles exceeding a speed limit. Etymology: radio detection and ranging
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1.
noun Usage: often attributive Etymology: radio detecting and ranging Date: 1941 a device or system consisting usually of a synchronized radio transmitter and receiver that emits radio waves and processes their reflections for display and is used especially for detecting and locating objects (as aircraft) or surface features (as of a planet), range of notice ...Толковый словарь английского языка
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