| 单词 | black carbon counter | 
| 释义 | black carbon counter [`blak ¦kär·bǝn ´kau̇nt·ǝr]  NUCLEONICS The original type of radiation counter used in radiocarbon dating, in which the sample, whose carbon has first been converted to carbon black, is mounted on the inside of a steel cylinder which is inserted into a sensitive Geiger counter. Also known as Libby counter.  | 
	
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