Ключевые слова: abstract, antique, background, circle, classic, closeup, cog, cogwheel, color, concept, design, detail, element, engine, engineering, equipment, factory, gear, hardware, industrial, industrial equipment, industry, iron, machine, machine part, machine teeth, machinery, macro, mechanic, mechanical, mechanism, metal, metallic, motion, old, part, power, precision, retro, retro revival, rotate, round, rusty, steel, technical, technology, teeth, vintage, wheel, work,