Ключевые слова: abstract, background, black, blue, business, car, cog, cogwheel, concept, construction, design, element, engine, engineering, equipment, gear, graphic, icon, idea, illustration, industrial, industry, isolated, machine, machinery, man, mechanic, mechanical, mechanism, metal, modern, object, part, people, power, set, sign, sport, steel, symbol, teamwork, technology, tool, transportation, vehicle, web, wheel, white, work,