make+friction

  • 61Welding — is a fabrication process that joins materials, usually metals or thermoplastics, by causing coalescence. This is often done by melting the workpieces and adding a filler material to form a pool of molten material (the weld puddle ) that cools to… …

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  • 62NPSH — This article is about Net Positive Suction Head. For the band commonly abbreviated to NPSH, see Natalie Portmans Shaved Head. For the fire hose coupling thread, see Glossary of firefighting equipment#N. Hydraulic circuit NPSH is an initialism for …

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  • 63Mechanical watch — The movement of a Russian watch A mechanical watch is a watch that uses a mechanical mechanism to measure the passage of time, as opposed to modern quartz watches which function electronically. It is driven by a spring (called a mainspring) which …

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  • 64international relations — a branch of political science dealing with the relations between nations. [1970 75] * * * Study of the relations of states with each other and with international organizations and certain subnational entities (e.g., bureaucracies and political… …

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  • 65tribology — tribologist, n. /truy bol euh jee, tri /, n. the study of the effects of friction on moving machine parts and of methods, as lubrication, of obviating them. [1965 70; TRIBO + LOGY] * * * Study of the interactions of sliding surfaces. It includes… …

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  • 66Perpetual motion — For other uses, see Perpetual motion (disambiguation). Robert Fludd s 1618 water screw perpetual motion machine from a 1660 wood engraving. This device is widely credited as the first recorded attempt to describe such a device in order to produce …

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  • 67Disc brake — Close up of a disc brake on a car On automobiles, disc brakes are often located with …

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  • 68Continuously variable transmission — Transmission types Manual Sequential manual Non synchronous Preselector Automatic Manumatic Semi automatic Electrohydraulic Dual …

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  • 69Winter service vehicle — A winter service vehicle (WSV), or snow removal vehicle, is used to clear thoroughfares of ice and snow.cite news|url=http://news.bbc.co.uk/1/hi/magazine/6342887.stm|title=How do snowplough drivers get to work?|publisher=BBC News Magazine… …

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  • 70china — /chuy neuh/, n. 1. a translucent ceramic material, biscuit fired at a high temperature, its glaze fired at a low temperature. 2. any porcelain ware. 3. plates, cups, saucers, etc., collectively. 4. figurines made of porcelain or ceramic material …

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