grinding medium
61perciform — ▪ fish order Introduction any member of the order Perciformes, a group of bony fishes with more than 6,000 species placed in about 150 families. The order is the largest group of fishes in the world today. Perciform fishes occur in… …
62Gunpowder — For other meanings, see gunpowder (disambiguation). Black powder for muzzleloading rifles and pistols in FFFG granulation size. Coin (diameter 24 mm) for comparison. Gunpowder, also known since in the late 19th century as black powder, was the… …
63Gelatin — (also gelatine, from French gélatine ) is a translucent, colourless, brittle, nearly tasteless solid substance, extracted from the collagen inside animals connective tissue. It has been commonly used as a gelling agent in food, pharmaceutical,… …
64Lathe — A lathe (pronEng|ˈleɪð) is a machine tool which spins a block of material to perform various operations such as cutting, sanding, knurling, drilling, or deformation with tools that are applied to the workpiece to create an object which has… …
65Oatmeal — For other uses, see Oatmeal (disambiguation). Rolled oats, a type of oatmeal Oatmeal is ground oat groats (i.e., oat meal, cf. cornmeal, peasemeal, etc.), or a porridge made from oats (also called oatmeal cereal or stirabout …
66Sandpaper — 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… …
67Evolution of mammals — Restoration of Thrinaxodon, a member of the cynodont group, which includes the ancestors of mammals Further information: Evolutionary history of life The evolution of mammals within the synapsid lineage (sometimes called mammal like reptiles )… …
68Swarming (military) — Swarming is a behavior in which autonomous, or semi autonomous, units of action attack an enemy from several different directions and then regroup. Pulsing , where the units shift the point of attack, is a necessary part of swarming. Swarming is… …
69Sungdong Shipbuilding & Marine Engineering — Sungdong Shipbuilding Group s members are 4 companiesungdong Machinery Engineering co., Ltd (성동기공)*1985 Founded Seoyeong Machinery (Gamjeon dong, Busan) *1987 Began development and production of steel production equipment (roll chocks, hydraulic… …
70wood — 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… …
