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单词 racon
释义

raconn.

Brit. /ˈreɪkɒn/, U.S. /ˈreɪˌkɑn/, /ˈreɪk(ə)n/
Origin: Formed within English, by compounding. Etymons: radar n., beacon n.
Etymology: < ra- (in radar n.) + -con (in beacon n.). Compare radar beacon n. at radar n. Compounds 2.
Originally U.S.
= radar beacon n. at radar n. Compounds 2.
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society > communication > telecommunication > radio communications > radio equipment > [noun] > radar apparatus > transmitter that retransmits
satellite station1938
racon1945
responder beacon1945
transponder1945
1945 Army & Navy Jrnl. (U.S.) 18 Aug. 1534/4 Racon, radar beacons. Stations which serve as the radar equivalents of lighthouses.
1967 B. Knox Blacklight vii. 142 ‘The screen was registerin' one o' those blacklight beacons.’.. ‘The deep-water racon,’ nodded Carrick.
1977 Globe & Mail (Toronto) 24 Feb. b16 Lakes shipping..can also obtain guidance from racons (shore-based radar reflectors).
2003 F. J. Larkin Coastal Navigation using GPS iii. 74 Certain bridges may be equipped with sound signals, racons, and radar reflectors where unusual geographic or weather conditions exist.
This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022).
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n.1945
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