Ключевые слова: air, architecture, background, brick, brown, building, chimney, city, conditioner, conditioning, construction, cooling, day, detail, duct, engineering, equipment, exterior, facade, factory, fan, heat, home, house, industrial, industry, metal, modern, outdoor, pattern, pipe, pipeline, plant, power, red, roof, sky, steel, structure, system, technology, town, tube, urban, vent, ventilation, ventilation system, wall, window, wire,