Ключевые слова: background, brown, close, closeup, cog, cogs, cogwheel, concept, design, engine, engineering, equipment, factory, gear, gears, grunge, industrial, industry, interior, iron, machine, machinery, macro, mechanical, mechanism, metal, motor, old, parts, retro, rusty, steel, teamwork, technology, teeth, up, vintage, wheel, wheels, white, work,