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percussion core

См. также в других словарях:

  • Core sample — Rock core samples. The product of a Diamond rig. (The bird is a Pied Butcherbird.) A core sample is a cylindrical section of (usually) a naturally occurring substance. Most core samples are obtained by drilling with special drills into the… …   Wikipedia

  • percussion flaking — a method of forming a flint tool by striking flakes from a stone core with another stone or a piece of bone or wood. * * * …   Universalium

  • percussion flaking — noun : the shaping of a stone implement by striking or chipping off flakes with another stone or a piece of wood, bone, or antler compare pressure flaking * * * a method of forming a flint tool by striking flakes from a stone core with another… …   Useful english dictionary

  • Prepared-core technique — The prepared core technique is means of producing stone tools by first preparing common stone cores that can then be shaped into the desired implement.History of prepared core processingFirst evidenceAlthough there had been different types of… …   Wikipedia

  • керн, получаемый при ударном бурении — — [http://slovarionline.ru/anglo russkiy slovar neftegazovoy promyishlennosti/] Тематики нефтегазовая промышленность EN percussion core …   Справочник технического переводчика

  • arts, East Asian — Introduction       music and visual and performing arts of China, Korea, and Japan. The literatures of these countries are covered in the articles Chinese literature, Korean literature, and Japanese literature.       Some studies of East Asia… …   Universalium

  • Lithic reduction — The Levallois technique of flint knapping Lithic reduction involves the use of a hard hammer precursor, such as a hammerstone, a soft hammer fabricator (made of wood, bone or antler), or a wood or antler punch to detach lithic flakes from a lump… …   Wikipedia

  • hand tool — any tool or implement designed for manual operation. * * * Introduction  any of the implements used by craftsmen in manual operations, such as chopping, chiseling, sawing, filing, or forging. Complementary tools, often needed as auxiliaries to… …   Universalium

  • performing arts — arts or skills that require public performance, as acting, singing, or dancing. [1945 50] * * * ▪ 2009 Introduction Music Classical.       The last vestiges of the Cold War seemed to thaw for a moment on Feb. 26, 2008, when the unfamiliar strains …   Universalium

  • Lithic flake — Flakes may be produced by a variety of means. Force may be introduced by direct percussion (striking the core with a percussor such as a rock or antler), indirect percussion (striking the core with an object, sometimes referred to as a punch,… …   Wikipedia

  • Drilling rig — For a detailed diagram of a Petroleum drilling rig, see List of components of oil drilling rigs. Drilling rig preparing rock blasting …   Wikipedia

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