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单词
radio direction finder
释义
WordReference Random House Unabridged Dictionary of American English © 2024
ra
′
dio direc
′
tion find′er,
Electronics, Radio and Television
a navigational aid establishing a fix by means of the bearings of two known radio stations.
Abbr.:
RDF
1920–25
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更新时间:2026/3/26 21:30:06