machine vibration
61Forging — This article is about the metalworking process. For specific hot forging hearth, see forge. For the act of counterfeiting, see forgery. Hot metal ingot being loaded into a hammer forge Forging is a manufacturing process involving the shaping of… …
62AH-56 Cheyenne — Infobox Aircraft name= AH 56 Cheyenne caption= AH 56 Cheyenne during testing type= Attack helicopter manufacturer= Lockheed designer= first flight= 21 September 1967 introduced= retired= status= Canceled primary user= more users= produced= number …
63Lockheed P-38 Lightning — P 38 redirects here. For other uses, see P 38 (disambiguation). P 38 Lightning P 38H 5 LO, AAF Ser. No. 4 …
64ISOLANTS — On désigne par isolant un matériau qui s’oppose à la transmission d’une forme déterminée d’énergie. On distingue plusieurs types d’isolants selon la nature du processus physique considéré. Si aucun courant électrique ne circule entre deux… …
65PlayStation 3 — PS3 redirects here. For other uses, see PS3 (disambiguation). PlayStation 3 …
66automobile — automobilist /aw teuh meuh bee list, moh bi list/, n. /aw teuh meuh beel , aw teuh meuh beel , aw teuh moh beel, beuhl/, n. 1. a passenger vehicle designed for operation on ordinary roads and typically having four wheels and a gasoline or diesel… …
67wood — wood1 woodless, adj. /wood/, n. 1. the hard, fibrous substance composing most of the stem and branches of a tree or shrub, and lying beneath the bark; the xylem. 2. the trunks or main stems of trees as suitable for architectural and other… …
68Wood — /wood/, n. 1. Grant, 1892 1942, U.S. painter. 2. Leonard, 1860 1927, U.S. military doctor and political administrator. * * * I Hard, fibrous material formed by the accumulation of secondary xylem produced by the vascular cambium. It is the… …
69LASERS — Les lasers (le mot «laser» est formé des initiales des mots anglais light amplification by stimulated emission of radiations , signifiant: amplification de lumière par émission stimulée de rayonnement) sont des sources nouvelles de rayonnement,… …
70TAMBOUR — Instrument à percussion, typique avant tout des membranophones (il existe cependant des tambours de bois, des tambours de bronze, des tambours à friction, etc.). La famille des tambours comprend des formes extrêmement variées, selon que… …
