two-thread worm

См. также в других словарях:

• worm gear — noun gear consisting of a shaft with screw thread (the worm) that meshes with a toothed wheel (the worm wheel); changes the direction of the axis of rotary motion • Hypernyms: ↑gear, ↑gear wheel, ↑geared wheel, ↑cogwheel • Part Meronyms: ↑ …   Useful english dictionary

• Worm drive — A worm drive is a gear arrangement in which a worm (which is a gear in the form of a screw) meshes with a worm gear (which is similar in appearance to a spur gear, and is also called a worm wheel). The terminology is often confused by imprecise… …   Wikipedia

• Screw thread — Internal and external threads illustrated using a common nut and bolt. The screw and nut pair can be used to convert torque into linear force. As the screw (or bolt) is rotated, the screw moves along its axis through the fixed nut, or the non… …   Wikipedia

• Gear — For the gear like device used to drive a roller chain, see Sprocket. This article is about mechanical gears. For other uses, see Gear (disambiguation). Two meshing gears transmitting rotational motion. Note that the smaller gear is rotating… …   Wikipedia

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• List of reptiles — This is a list of extant reptiles by family, spanning three subclasses.=Subclass Anapsida=Order Testudines Turtles*Suborder Cryptodira **Family Chelydridae Common Snapping Turtles and Alligator Snapping Turtle **Family Emydidae Pond Turtles and… …   Wikipedia

• literature — /lit euhr euh cheuhr, choor , li treuh /, n. 1. writings in which expression and form, in connection with ideas of permanent and universal interest, are characteristic or essential features, as poetry, novels, history, biography, and essays. 2.… …   Universalium

• Life Sciences — ▪ 2009 Introduction Zoology       In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …   Universalium

• snake — snakelike, adj. /snayk/, n., v., snaked, snaking. n. 1. any of numerous limbless, scaly, elongate reptiles of the suborder Serpentes, comprising venomous and nonvenomous species inhabiting tropical and temperate areas. 2. a treacherous person; an …   Universalium

• Cod — This article is about the fish. For other uses, see Cod (disambiguation). Gadus Gadus morhua, Atlantic cod Conservation status …   Wikipedia

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