Ключевые слова: accuracy, aircraft, antifriction, assembly, auto, ball, bearing, beautiful, berries, blue, cherry, chrome, chromed, closeup, conveyor, drive, expressive, friction, glitter, heavy, industrial, industry, life, lustre, machinery, manufacture, material, mechanics, mechanism, metal, motion, movement, part, precision, racer, ring, roller, rolling, round, scattering, service, silver, steel, still, technic, technical, technology, train, transportation, wheel, white,