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单词 active charcoal
释义

> as lemmas

active charcoal
active charcoal n. = activated carbon n. at activated adj. Compounds.
ΚΠ
1913 U.S. Patent 1,060,673 2/1 Slight contact of air with the active charcoal often decreases its efficiency at least 50%.
1938 Thorpe's Dict. Appl. Chem. II. 319/2 Active charcoal is widely used in industry for the recovery of valuable products which exist as attenuated vapours in unadsorbable gases.
1990 Here's Health Dec. 8/2 Over 30 per cent of the German water supply contains pesticides; only active charcoal filters can remove the residues.
extracted from activeadj.n.
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