单词	racon
释义	racon /ˈreɪkɒn / noun chiefly US A radar beacon that can be identified and located by its response to a specific radar signal.The racon on the Bishop Rock Lighthouse works on the 3cm and 10 cm wavelengths, has a range of around 18 nautical miles and the Morse coding of T. Origin 1940s: blend of radar and beacon.
随便看	expression mark expressive expressively expressiveness expressivity express lane express lift expressly express rifle express train expressway expropriate expropriation expropriator expt. exptl. expulsion expulsive expunction expunge expungement expunger expurgate expurgation expurgator

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