| 单词 | noise meter | 
| 释义 | > as lemmasnoise meter   noise meter  n. ΚΠ 1931    Proc. IRE 19 1953  				This instrument, which has been called a ‘circuit noise meter’, consists of an amplifier, a frequency weighting network, a rectifier, and an indicating meter. 1963    Science 8 Nov. 9/1 		(advt.)	  				It consists of a Bias Supply and Noise Meter, Window Amplifier, Vacuum Chamber, and a Precision Pulse Generator. 1998    N.Y. Times 3 Dec.  a30/1  				Inspectors..bearing noise meters monitored a reading of the names of people who had died. < as lemmas | 
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