| 单词 | cyclone |
| 释义 | cyclone /suy"klohn/, n. 1. a large-scale, atmospheric wind-and-pressure system characterized by low pressure at its center and by circular wind motion, counterclockwise in the Northern Hemisphere, clockwise in the Southern Hemisphere. Cf. anticyclone, extratropical cyclone, tropical cyclone. 2. (not in technical use) tornado. 3. Also called cyclone collector, cyclone separator. Mach. a device for removing small or powdered solids from air, water, or other gases or liquids by centrifugal force. [term introduced by British meteorologist Henry Piddington (1797-1858) in 1848, perh. < Gk kyklôn revolving (prp. of kykloûn to revolve, v. deriv. of kýklos; see CYCLE); appar. confused by Piddington with kýkloma wheel, snake's coil] |
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