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prismatic tool

См. также в других словарях:

  • Prismatic blade — In archaeology, a prismatic blade is a long, narrow, specialized lithic flake with parallel margins. Prismatic blades are removed from polyhedral blade cores through pressure reduction. This process results in a very standardized finished tool… …   Wikipedia

  • Diamond-point tool — Diamond Di a*mond (?; 277), n. [OE. diamaund, diamaunt, F. diamant, corrupted, fr. L. adamas, the hardest iron, steel, diamond, Gr. ?. Perh. the corruption is due to the influence of Gr. ? transparent. See {Adamant}, {Tame}.] 1. A precious stone… …   The Collaborative International Dictionary of English

  • Vise (tool) — A vise or vice (see under miscellaneous spelling differences) is a mechanical screw apparatus used for holding or clamping a work piece to allow work to be performed on it with tools such as saws, planes, drills, mills, screwdrivers, sandpaper,… …   Wikipedia

  • Obsidian use in Mesoamerica — Obsidian projectile point. Obsidian is a naturally formed volcanic glass that was an important part of the material culture of Pre Columbian Mesoamerica. Obsidian was a highly integrated part of daily and ritual life, and its widespread and… …   Wikipedia

  • Mollusc shell — Closed and open shells of a marine bivalve, Petricola pholadiformis. A bivalve shell is composed of two hinged valves which are joined by a ligament …   Wikipedia

  • Tungsten carbide — Chembox new Name = Tungsten carbide ImageFile = Tungsten carbide.jpg ImageName = Tungsten carbide milling bits Section1 = Chembox Identifiers CASNo = 12070 12 1 Section2 = Chembox Properties Formula = WC MolarMass = 195.86 g·mol−1 Appearance =… …   Wikipedia

  • Linkage (mechanical) — This article is about assemblies of links designed to manage forces and movement. For other uses, see Linkage. Variable stroke engine (Autocar Handbook, Ninth edition) A mechanical linkage is an assembly of bodies connected together to manage… …   Wikipedia

  • Chunchucmil — Archaeological mounds of ancient Chunchucmil …   Wikipedia

  • bivalve — bivalvular /buy val vyeuh leuhr/, adj. /buy valv /, n. 1. Also called lamellibranch. Zool. any mollusk, as the oyster, clam, scallop, or mussel, of the class Bivalvia, having two shells hinged together, a soft body, and lamellate gills. adj. 2.… …   Universalium

  • telescope — /tel euh skohp /, n., adj., v., telescoped, telescoping. n. 1. an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens… …   Universalium

  • Shades of green — Main article: Green Green   Spectral coordinates  Wavelength 520–570 nm …   Wikipedia

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