?飞机探向器
... 飞机探向器 aircraft direction finder 固定探向器 stationarydirectionfinder 声响探向器 acousticdirectionfinder ...
?飞机测向仪
... 接收机测试器 receiver tester 飞机测向仪 aircraft direction finder 电视接收机测量 television receiver measurement ...
飞行器自动方向探知器
飞机探向器
He invented the radio direction finder, autopilot and the first fully automatic aircraft landing system.
FORBES: The Bill Lear I Knew
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