Ключевые слова: circle, circular, cog, cogs, cogwheel, concept, conceptual, cutout, design, detail, element, element gear, engineering, gear, gray, grey, groove, icon, indoors, industrial, industry, inside, instrument, interior, isolated, machine, machinery, manufacture, manufacturing, mechanical, mechanism, metal, nobody, object, part, piece, precise, precision, production, progress, progression, rotating, round, shape, sprocket, symbol, technological, technology, thing, tool, wheel, wheeled, white background,