Ключевые слова: abstract, background, car, classic, clock, close, closeup, cog, cogs, cogwheel, connection, cooperation, design, energy, engine, engineering, equipment, factory, focus, gear, gears, industrial, industry, interlocked, iron, machine, macro, manufacturing, mechanical, mechanics, mechanism, metal, metallic, motor, part, parts, power, precision, retro, shiny, steampunk, steel, symbol, teamwork, technology, teeth, up, wheel, wheels, work,