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perforated absorber

См. также в других словарях:

  • Micro perforated plate — A Micro Perforated Plate (MPP) is a device used to absorb sound, reducing its intensity. It consists of a thin flat plate, made from one of several different materials, with small holes punched in it. An MPP offers an alternative to traditional… …   Wikipedia

  • collimation — The method, in radiology, of restricting and confining the x ray beam to a given area and, in nuclear medicine, of restricting the detection of emitted radiations from a given area of interest. [L. collineo, to direct in a straight line] * * *… …   Medical dictionary

  • Solar thermal energy — Solar thermal system for water heating in Santorini, Greece …   Wikipedia

  • 35 mm film — is the basic film gauge most commonly used for both still photography and motion pictures, and remains relatively unchanged since its introduction in 1892 by William Dickson and Thomas Edison, using film stock supplied by George Eastman. The… …   Wikipedia

  • petroleum refining — Introduction  conversion of crude oil into useful products. History Distillation of kerosene and naphtha       The refining of crude petroleum owes its origin to the successful drilling of the first oil well in Titusville, Pa., in 1859. Prior to… …   Universalium

  • layer — A sheet of one substance lying on another and distinguished from it by a difference in texture or color or by not being continuous with it. SEE ALSO: stratum, lamina. SYN: panniculus. ameloblastic l. the internal l. of the enamel organ. SYN: enam …   Medical dictionary

  • Umnumzaan — The Umnumzaan is a folding pocket knife manufactured by Chris Reeve Knives of Boise, Idaho, and designed by Chris Reeve. The name Umnumzaan is derived from the Zulu language, meaning “Head of the family”, or “Boss” (colloq), a tribute to Mr.… …   Wikipedia

  • oleo strut — ˈōlēˌō noun Etymology: ole + strut : a cylindrical strut with a built in telescopic shock absorber that damps or absorbs rectilinear shock (as in an aircraft landing gear) by forcing oil up through an orifice in the bottom of a hollow piston into …   Useful english dictionary

  • Solar energy — is the light and radiant heat from the Sun that powers Earth s climate and weather and sustains life. Since ancient times it has been harnessed for human use through a range of technologies. Solar radiation along with secondary solar resources… …   Wikipedia

  • MPP — or M.P.P. may refer to:* Marginal physical product * Marijuana Policy Project, organization in the United States * Massively parallel processing, in parallel computing ** Goodyear MPP, an early implementation of massively parallel processing *… …   Wikipedia

  • Extrusion — is a process used to create objects of a fixed cross sectional profile. A material is pushed or drawn through a die of the desired cross section. The two main advantages of this process over other manufacturing processes is its ability to create… …   Wikipedia

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