Ключевые слова: auto, bearing, bearings, blueprint, business, chrome, closeup, construction, delineation, details, drafting, drawing, education, engineer, engineering, equipment, gears, ideas, industrial, industry, machinery, mechanical, mechanics, mechanism, metal, motion, office, paper, pattern, plot, precision, project, reflection, ring, roller, rolling, round, ruler, service, shape, silver, spare, steel, technical, technology, tool, trammel, transportation, wheel, work,