单词 | catalysts |
释义 | catalysis /kə-talˈi-sis/nounThe chemical influence of a substance which is not itself permanently changed ORIGIN: Gr katalysis, from kata down, and lyein to loosen catˈalase noun An enzyme that reduces hydrogen peroxide catˈalyse or (N American) catˈalyze /-līz/ transitive verb
catˈalyser or -yzer noun
catˈalyst noun
catalytic /-litˈik/ or catalytˈical adjective catalytˈically adverb catalytic converter noun A device fitted to the exhaust of a motor vehicle which converts harmful impurities in the exhaust gases to carbon dioxide, nitrogen and water by oxidation catalytic cracker see cat-cracker |
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