Ключевые слова: abstract, apparatus, background, black, brand, car, closeup, cog, cogwheel, connection, design, engineering, factory, frame, gear, gears, gearwheel, grunge, history, industrial, industry, iron, machine, machinery, many, mechanical, mechanics, mechanism, metal, new, order, part, pattern, plant, press, shaft, shafts, spare, spur, steel, teeth, texture, train, transmission, wheel,