helical groove

См. также в других словарях:

• groove — A narrow, elongate depression or furrow on any surface. SEE ALSO: sulcus. alveolobuccal g. the upper and lower half of the buccal vestibule on each side. SYN: alveolobuccal sulcus, gingivobuccal g., gingivobuccal sulcus. alveololabial g. 1. the… …   Medical dictionary

• major groove — in DNA, the larger groove occurring between successive turns of the two antiparallel chains around the helical axis. See illustration at deoxyribonucleic acid. Cf. minor g …   Medical dictionary

• minor groove — in DNA, the smaller groove occurring between the two antiparallel chains as they wind around the helical axis. See illustration at deoxyribonucleic acid. Cf. major g …   Medical dictionary

• Fly system — Fly loft of the Theater Bielefeld in Germany A fly system, flying system or theatrical rigging system, is a system of lines (e.g. ropes), blocks (pulleys), counterweights and related devices within a theatre that enable a stage crew to quickly,… …   Wikipedia

• DVD — This article is about the storage media format. For the binocular vision condition, see Dissociated vertical deviation. DVD DVD R read/write side Media type Optical disc …   Wikipedia

• Helix angle — In mechanical engineering, a helix angle is the angle between any helix and an axial line on its right, circular cylinder or cone. [ANSI/AGMA. ANSI/AGMA Standards 1012 G05 Gear Nomenclature, Definitions of Terms with Symbols. American Gear… …   Wikipedia

• Screw — This article is about the fastener. For other uses, see Screw (disambiguation). Screws come in a variety of shapes and sizes for different purposes. U.S. quarter coin (diameter 24 mm) shown for scale. A screw, or bolt, is a type of fastener… …   Wikipedia

• screw — /skru / (say skrooh) noun 1. a metal device having a slotted head and a tapering body with a helical ridge usually driven into wood with the aid of a screwdriver to assemble and secure parts of a building construction, furniture, etc. 2. a… …  

• Rifle — A rifle is a firearm designed to be fired from the shoulder, with a barrel that has a helical groove or pattern of grooves ( rifling ) cut into the barrel walls. The raised areas of the rifling are called lands, which make contact with the… …   Wikipedia

• Inclined plane — This article deals with the physical structure. For related terms, see canal inclined plane, cable railway, funicular, or fixed wing aircraft (airplane). , but the inclined plane allows the same work to be done with a smaller force exerted over a …   Wikipedia

• Baldachin — Engraving of the Gnadenaltar in the Vierzehnheiligen Basilica, Bad Staffelstein, Bavaria. This altar has a baldachin. A baldachin, or baldaquin (from Italian: baldacchino), is a canopy of state over an altar or throne. It had its beginnings as a… …   Wikipedia