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以上来源于: WordNet
N a highly directional aerial system that can be used to determine the direction of incoming radio signals, used esp as a navigation aid (尤用于导航设备中的)无线电测向仪 (Abbreviation D/F, DF)
VDF? Very – high – frequency Direction Finder?
甚高频测向器?。
youdao
I am calibrating radio direction finder or adjusting compasses.
我正在校准无线电测向仪或校正指南针。
Function test and calibration self-heterodyne curve for direction finder on sea trial.
航行试验中测向仪效用试验及自差曲线校正。
He invented the radio direction finder, autopilot and the first fully automatic aircraft landing system.
FORBES: The Bill Lear I Knew
During the second world war at Marconi he was part of the team that invented a radio direction-finder which was fitted to British bombers.
ECONOMIST: Christopher Cockerell
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