| 单词 | adf | 
| 释义 | > as lemmasADF   ADF n. automatic direction finder. ΚΠ 1939    Aero Digest June 24/2 		(advt.)	  				The ADF-6—Automatic Direction Finder: Primarily a powerful radio receiver offering direction finding... Learadio offers the ADF-6 as the latest contribution to the art of safe flying. 1966    McGraw-Hill Encycl. Sci. & Technol. 		(rev. ed.)	 IV. 231/2  				Radio stations erected specifically for use with the ADF are known as NDB (non-directional beacons or radiophares). 2000    Public Admin. Rev. 60 247/1  				The plane was equipped with only one automatic direction finder (ADF). < as lemmas  | 
	
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