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borer hole

См. также в других словарях:

  • borer — Ⅰ. bore [1] ► VERB 1) make (a hole) in something with a drill or other tool. 2) hollow out (a gun barrel or other tube). ► NOUN 1) the hollow part inside a gun barrel or other tube. 2) the diameter of this: a small bore rifle …   English terms dictionary

  • Raise borer — A raise borer is a machine used in mining for drilling a circular hole or shaft between two levels of a mine. The borer is set up on the upper level of the two levels to be connected. A small diameter hole is bored to the level required, using a… …   Wikipedia

  • Jig borer — The jig borer is a type of machine tool invented at the end of World War I to make possible the quick yet very precise location of hole centers. It was invented independently in the United States and Switzerland. [Moltrecht, Karl Hans: Machine… …   Wikipedia

  • Cork borer — Set of cork borers. Left to right sizes 6,7,8,9 nested, size 5, American penny for scale, sizes 4,3,2,1 nested, pusher. Background is 1/4 square graph paper. A cork borer, often used in a chemistry laboratory, is a metal tool for cutting a hole… …   Wikipedia

  • branch and twig borer — ▪ insect also called false powder post borers   any of approximately 700 species of beetles (insect order Coleoptera) that live in dry wood or under tree bark. Branch and twig borers range in size from 3 to 20 mm (0.1 to 0.8 inch). However, the… …   Universalium

  • shot borer — noun : shot hole borer * * * shot borer, a small beetle which bores many minute holes in trees; pin borer …   Useful english dictionary

  • Instep borer — The instep borer was a mediaeval German instrument of torture that externally resembled an iron boot. It was hinged to permit the free insertion and removal of the bare foot. A crank projected from a housing over the instep, which concealed a… …   Wikipedia

  • earth borer — Earth Earth ([ e]rth), n. [AS. eor[eth]e; akin to OS. ertha, OFries. irthe, D. aarde, OHG. erda, G. erde, Icel. j[ o]r[eth], Sw. & Dan. jord, Goth. a[=i]r[thorn]a, OHG. ero, Gr. ?, adv., to earth, and perh. to E. ear to plow.] 1. The globe or… …   The Collaborative International Dictionary of English

  • jig borer — noun A type of machine tool invented during the World War I era to make possible the quick yet very precise location of hole centers …   Wiktionary

  • shot-hole borer — noun : a small bark beetle (Scolytus rugulosus) that attacks orchard fruit trees and kills the bark of small branches and twigs; broadly : any of several other beetles of the family Scolytidae attacking trees or shrubs (as the beetle Xyleborus… …   Useful english dictionary

  • tunnels and underground excavations — ▪ engineering Introduction        Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening …   Universalium

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