A system for detecting the presence of distant objects, and determining their direction, distance, or motion, by transmitting pulses of radio waves…
| 单词 | θ197845 |
| 释义 | society > communication > telecommunication > radio communications > radio equipment > [noun] > radar apparatus (26) radar1941 A system for detecting the presence of distant objects, and determining their direction, distance, or motion, by transmitting pulses of radio waves… set1948 A piece of electrical or electronic apparatus, as a telephone, a telegraph receiver or transmitter, a radio or television receiver, etc. Also, a… rig1966 A radio transmitter or receiver as used by an amateur. Also more widely: any piece of radio equipment, as an aerial or radar set. Subcategories:— types of (3) — aerial (2) — transmitter that sends interrogating signals (1) — device that receives reply from transponder (1) — transmitter that retransmits (4) — cavity resonator (2) — marks or signals on radar screen (9) — radar tower (1) |
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