单词 | prefilter |
释义 | > as lemmaspre-filter pre-filter v. Brit. , U.S. ΚΠ 1928 Daily Gleaner (Kingston, Jamaica) 2 May 19/1 After this preliminary affining treatment the refiner melts the washed sugar which is then defecated or pre-filtered with Kieselguhr. 1991 Power Sept. 30/3 Pre-filtering the gas upstream of the SCR unit will extend the life of the catalyst. prefilter prefilter n. Brit. , U.S. , ΚΠ 1911 Times Engin. Suppl. 30 Aug. 20/4 (advt.) Filtration plant for waterworks... Prefilters and appurtenances, filtered water reservoir..as shown and specified. 2002 Fine Woodworking Mar. 117/2 Many respirators come with a prefilter in front of the charcoal filter canister. < as lemmas |
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