The admission of a proper supply of fresh air, esp. to a room, building, mine, or other place where the air readily becomes stagnant and…
| 单词 | θ61417 |
| 释义 | the world > physical sensation > cleanness and dirtiness > freedom from impurities > removal of impurities > ventilation and air-conditioning > [noun] (14) ventilation1664 The admission of a proper supply of fresh air, esp. to a room, building, mine, or other place where the air readily becomes stagnant and… ventilating1743 The action of the verb in various senses; ventilation. air conditioning1909 Originally: the process of cleaning air and controlling its temperature and humidity in connection with certain manufacturing processes. Now… central air conditioning1923 air conditioning of multiple rooms in a building by a single air conditioning unit, typically using a series of ducts (frequently attributive)… central air1955 = central air conditioning n. AC1962 (a) n. air conditioning; (b) adj. air-conditioned. air-con1970 = air conditioning, n. air1974 U.S. Chiefly in classified advertisements: air conditioning, esp. in a car or other vehicle. Cf. central air n. at central, adj. compounds. Subcategories:— air-conditioner (4) — device for admitting fresh air (1) — fresh or clean air (1) |
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