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rectangular duct

См. также в других словарях:

  • Duct (HVAC) — A round galvanized steel duct connecting to a typical diffuser Fire resistance rated …   Wikipedia

  • Hydraulic diameter — The hydraulic diameter, D h , is a commonly used term when handling flow in noncircular tubes and channels. Using this term one can calculate many things in the same way as for a round tube.Definition: D h = frac {4A}{U} where A is the cross… …   Wikipedia

  • SOMMERFELD — GERMANY (see also List of Individuals) 5.12.1868 Königsberg/RU 26.4.1951 Munich/D Arnold Sommerfeld read mathematics and physics at Königsberg University, formerly in Prussia and today s Kaliningrad in Russia. After two years as an assistant at… …   Hydraulicians in Europe 1800-2000

  • Marstonia comalensis — Shell of one of the lectotypes of Marstonia comalensis. Scale bar is 1.0 mm. Scientific classification Kingdom …   Wikipedia

  • building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …   Universalium

  • Kaval — This article is about the flute. For the city in Iran, see Kavar. For the professional wrestler formerly known as Kaval, see Low Ki. Kaval Bulgarian kaval in C (До) made in 2009 from European Cornel (Cornus mas) Дрян Classification …   Wikipedia

  • digestive system, human — Introduction  the system used in the human body for the process of digestion. The human digestive system consists primarily of the digestive tract (alimentary canal), or the series of structures and organs through which food and liquids pass… …   Universalium

  • ear, human — ▪ anatomy Introduction       organ of hearing and equilibrium that detects and analyzes noises by transduction (or the conversion of sound waves into electrochemical impulses) and maintains the sense of balance (equilibrium).  The human ear, like …   Universalium

  • Electrical wiring — in general refers to insulated conductors used to carry electricity, and associated devices. This article describes general aspects of electrical wiring as used to provide power in buildings and structures, commonly referred to as building wiring …   Wikipedia

  • MHD generator — Energy portal The MHD (magnetohydrodynamic) generator or dynamo transforms thermal energy or kinetic energy directly into electricity. MHD generators are different from traditional electric generators in that they can operate at high tempera …   Wikipedia

  • sound — sound1 soundable, adj. /sownd/, n. 1. the sensation produced by stimulation of the organs of hearing by vibrations transmitted through the air or other medium. 2. mechanical vibrations transmitted through an elastic medium, traveling in air at a… …   Universalium

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