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percolating bed

См. также в других словарях:

  • cave — cavelike, adj. /kayv/, n., v., caved, caving. n. 1. a hollow in the earth, esp. one opening more or less horizontally into a hill, mountain, etc. 2. a storage cellar, esp. for wine. 3. Eng. Hist. a secession, or a group of seceders, from a… …   Universalium

  • water — As designating a commodity or a subject of ownership, this term has the same meaning in law as in common speech; but in another sense, and especially in the plural, it may designate a body of water, such as a river, a lake, or an ocean, or an… …   Black's law dictionary

  • water course — A running stream of water; a natural stream fed from permanent or natural sources, including rivers, creeks, runs, and rivulets. There must be a stream, usually flowing in a particular direction, though it need not flow continuously. It may… …   Black's law dictionary

  • environmental works — ▪ civil engineering Introduction       infrastructure that provides cities and towns with water supply, waste disposal, and pollution control services. They include extensive networks of reservoirs, pipelines, treatment systems, pumping stations …   Universalium

  • Trickling filter — A trickling filter consists of a fixed bed of rocks, gravel, slag, polyurethane foam, sphagnum peat moss, or plastic media over which sewage or other wastewater flows downward and causes a layer or film of microbial slime to grow, covering the… …   Wikipedia

  • glacial landform — ▪ geology Introduction  any product of flowing ice and meltwater. Such landforms are being produced today in glaciated areas, such as Greenland, Antarctica, and many of the world s higher mountain ranges. In addition, large expansions of present… …   Universalium

  • Sewage treatment — The objective of sewage treatment is to produce a disposable effluent without causing harm to the surrounding environment, and also prevent pollution.[1] Sewage treatment, or domestic wastewater treatment, is the process of removing contaminants… …   Wikipedia

  • Lake — For other uses, see Lake (disambiguation). Oeschinen Lake in the Swiss Alps A lake is a body of relatively still fresh or salt water of considerable size, localized in a basin, that is surrounded by land. Lakes are inland and not part of the… …   Wikipedia

  • Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry       The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …   Universalium

  • joint — /joynt/, n. 1. the place at which two things, or separate parts of one thing, are joined or united, either rigidly or in such a way as to permit motion; juncture. 2. a connection between pieces of wood, metal, or the like, often reinforced with… …   Universalium

  • Cave — For other uses, see Cave (disambiguation). Cavern redirects here. For other uses, see Cavern (disambiguation). Lechuguilla Cave, New Mexico A cave or cavern is a natural underground space large enough for a human to enter. The term applies to… …   Wikipedia

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