grinding size
81Tool and die maker — Not to be confused with tap and die. Tool and die makers are workers in the manufacturing industry who make jigs, fixtures, dies, molds, machine tools, cutting tools (such as milling cutters and form tools), gauges, and other tools used in… …
82Mesopotamia, history of — ▪ historical region, Asia Introduction history of the region in southwestern Asia where the world s earliest civilization developed. The name comes from a Greek word meaning “between rivers,” referring to the land between the Tigris and… …
83Abalone — For board game, see Abalone (board game). Abelone redirects here. For the wine grape that is also known as Abelone, see Chasselas. Abalone Living abalone in tank showing epipodium and tentacles, anterior end to the right …
84Crystal oscillator — A miniature 4 MHz quartz crystal enclosed in a hermetically sealed HC 49/US package, used as the resonator in a crystal oscillator. A crystal oscillator is an electronic oscillator circuit that uses the mechanical resonance of a vibrating crystal …
85Silt — is soil or rock derived granular material of a grain size between sand and clay. Silt may occur as a soil or as suspended sediment in a surface water body. It may also exist as soil deposited at the bottom of a water body. Source Silt is… …
86Sandpaper — Abrasive Paper is a form of paper where an abrasive material has been fixed to its surface.Abrasive Paper is part of the Coated abrasives family of abrasive products. It is used to remove small amounts of material from surfaces, either to make… …
87Oxy-fuel welding and cutting — Oxyacetylene redirects here. For the song, see Cubanate. Side of metal, cut by oxygen propane cutting torch …
88coloration — colorational, adj. colorationally, adv. /kul euh ray sheuhn/, n. appearance with regard to color arrangement or use of colors; coloring: the bold coloration of some birds. [1605 15; COLOR + ATION] * * * ▪ biology Introduction in biology,… …
89mammal — mammallike, adj. /mam euhl/, n. any vertebrate of the class Mammalia, having the body more or less covered with hair, nourishing the young with milk from the mammary glands, and, with the exception of the egg laying monotremes, giving birth to… …
90brick and tile — ▪ building material Introduction structural clay products, manufactured as standard units, used in building construction. The brick, first produced in a sun dried form at least 6,000 years ago and the forerunner of a wide range of… …
