| 单词 | radio altimeter | 
| 释义 | radio altimeter [`rād·ē·ō al`tim·ǝd·ǝr]  ENGINEERING An absolute altimeter that depends on the reflection of radio waves from the earth for the determination of altitude, as in a frequency-modulated radio altimeter and a radar altimeter. Also known as electronic altimeter; reflection altimeter.  | 
	
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