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machines à tour de définitions.
A simple machine is a mechanical device that changes the direction or magnitude of a force. In general, they can be defined as the simplest mechanisms that use mechanical advantage (also called leverage) to multiply force. Usually the term refers to the six classical simple machines which were defined by Renaissance scientists:. Lever
Machines are often designed to yield a high mechanical advantage to reduce the effort needed to do that work. ♦ A simple machine is a wheel, a lever, or an inclined plane. All other machines can be built using combinations of these simple machines; for example, a drill uses a combination of gears (wheels) to drive helical inclined planes (the ...
simple machine n. Any of numerous basic devices that alter the magnitude or direction, or both, of an applied force, traditionally including the lever, wedge, inclined plane, wheel and axle, pulley, and screw. simple machine n (General Physics) a simple device for altering the magnitude or direction of a force. The six basic types are the lever, wheel ...
washing machine n. A usually automatic machine for washing clothes and linens. washing machine n (Mechanical Engineering) a mechanical apparatus, usually powered by electricity, for washing clothing, linens, etc wash′ing machine` n. an apparatus, esp. a appliance, for washing clothing, linens, etc. Also called washer. [1790–1800 ...
Sur ce type de tour les réglages sont longs et le temps de passage d’une série à l’autre immobilise la machine. Ce tour sera réservé pour les grandes et très grandes séries à des pièces de dimensions réduites à ... 2- Définitions des opérations de tournage: ... mandrin-broche étant différente d’un modèle de tour à l’autre.
Tour definition is - a journey for business, pleasure, or education often involving a series of stops and ending at the starting point; also : something resembling such a tour. How to use tour in a sentence. ... More Definitions for tour. tour. noun. English Language Learners Definition of tour (Entry 1 of 2)
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