| 单词 | downconverting | 
| 释义 | > as lemmasdownconˈverting   downconˈverting  n. ΚΠ 1962    IRE Trans. Microwave Theory & Techniques 10 394/1  				The reverse procedure of down-converting is not practical because the power gain is always less than unity. 1980    IEE Proc. H. 112 		(abstract)	  				There are many techniques for synthesising microwave frequencies, including up-converting by multiplication, sampling, down-converting and comparing to a low-frequency reference. 2010    D. Draven Filmmaker's Bk. of Dead xvi. 252  				Downconverting is a postproduction process of taking higher resolution source material..and converting to lower resolution source material. < as lemmas  | 
	
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