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单词 air filter
释义

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air filter
air filter n. an apparatus for extracting extraneous or harmful particles from air.
ΘΚΠ
the world > physical sensation > cleanness and dirtiness > freedom from impurities > removal of impurities > ventilation and air-conditioning > [noun] > air-conditioner
air filter1853
air washer1876
air conditioner1909
conditioner1938
1853 Househ. Words 13 Aug. 810/1 Men working in cities would find it always worth while to retain the air-filter supplied to them by nature for the purpose—the mustache and beard around the mouth.
1861 J. Stenhouse (title) The successful application of charcoal air-filters to the ventilation and disinfection of sewers.
a1884 E. H. Knight Pract. Dict. Mech. Suppl. 15/2 Air Filter, a protective ventilator consisting of a cloth interwoven with thin brass wire to act as a filter for the air.
1927 Daily Tel. 10 Feb. Motor manufacturers are urged to provide air-filters on all motor vehicles.
1995 Atlantic Dec. 38/3 Mielke's laboratory at Xavier is equipped with a ‘clean room’—a glassed-in area, like a greenhouse, fitted with air filters.
extracted from airn.1
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更新时间:2024/9/20 22:56:05