grinding medium
81Lat — This article is about the Malaysian cartoonist. For other uses, see Lat (disambiguation). Datuk Lat Born Mohammad Nor Khalid 5 March 1951 (1951 …
82environment — environmental, adj. environmentally, adv. /en vuy reuhn meuhnt, vuy euhrn /, n. 1. the aggregate of surrounding things, conditions, or influences; surroundings; milieu. 2. Ecol. the air, water, minerals, organisms, and all other external factors… …
83railroad — /rayl rohd /, n. 1. a permanent road laid with rails, commonly in one or more pairs of continuous lines forming a track or tracks, on which locomotives and cars are run for the transportation of passengers, freight, and mail. 2. an entire system… …
84Mass finishing — is a group of manufacturing processes that allow large quantities of parts to be simultaneously finished. The goal of this type of finishing is to burnish, deburr, clean, radius, de flash, descale, remove rust, polish, brighten, surface harden,… …
85Diamond — This article is about the mineral. For the gemstone, see Diamond (gemstone). For other uses, including the shape ◊, see Diamond (disambiguation) …
86History of the Caribbean — The history of the Caribbean reveals the significant role the region played in the colonial struggles of the European powers since the fifteenth century. In the twentieth century the Caribbean was again important during World War II, in the… …
87Optical mineralogy — A petrographic microscope, which is an optical microscope fitted with cross polarizing lenses, a conoscopic lens, and compensators (plates of anisotropic materials; gypsum plates and quartz wedges are common), for crystallographic analysis.… …
88Metal polishing — Metal polishing, also termed buffing, is the process of smoothing metals and alloys and polishing to a satin, bright, or smooth mirror like finish. This is achieved by use of abrasives pads, belts and/or wheels with polishing compounds selected… …
89Science and inventions of Leonardo da Vinci — Infobox Artist name = Leonardo da Vinci imagesize = 200px caption = The Vitruvian Man by Leonardo is possibly the best known drawing in the world. birthname = Leonardo di Ser Piero birthdate = birth date|1452|4|15|mf=y flagicon|ITA Anchiano,… …
90coffee — /kaw fee, kof ee/, n. 1. a beverage consisting of a decoction or infusion of the roasted ground or crushed seeds (coffee beans) of the two seeded fruit (coffee berry) of certain coffee trees. 2. the seeds or fruit themselves. 3. any tropical tree …
