Ключевые слова: ancient, antique, closeup, cog, cogwheel, connect, detail, dirty, engine, engineering, equipment, factory, gear, gearing, grunge, heavy, huge, industrial, industry, inside, iron, large, machine, machinery, mechanic, mechanical, mechanism, old, part, power, precision, reduction, rotate, rotation, round, rust, steel, structure, system, technical, technology, transmission, vintage, wheel, work,