automatic direction finder

noun

: a navigational tool that continuously displays the bearing of a designated reference radio beacon

But unlike some other relics, the ADF (automatic direction-finder) keeps rearing its ugly head like an uninvited relative who shows up at the family picnic. Instrument pilots who try to fly without a good foundation in ADF needlework can quickly run smack into an indigestible hash of headings and bearings.

Thomas H. Block, Plane & Pilot, January 1994

—abbreviation ADF

Word History

First Known Use

1938, in the meaning defined above

单词	automatic direction finder
释义	automatic direction finder noun : a navigational tool that continuously displays the bearing of a designated reference radio beacon But unlike some other relics, the ADF (automatic direction-finder) keeps rearing its ugly head like an uninvited relative who shows up at the family picnic. Instrument pilots who try to fly without a good foundation in ADF needlework can quickly run smack into an indigestible hash of headings and bearings. Thomas H. Block, Plane & Pilot, January 1994 —abbreviation ADF Word History First Known Use 1938, in the meaning defined above
随便看	call the shots (of) call the shots of call the tune call the tune (for) call the tune for call them like one sees them call time call time-out call to account call to arms call to order call to quarters call to worship call up call upon call-and-re call-and-response call-back pay call-board call-fire call-in call-in pay call-over call-up call-up-a-storm