Ключевые слова: aeration, air, aluminum, building, cellar, chrome, circulation, cold, conditioner, conditioning, construction, cool, cooling, duct, ducting, ducts, ductwork, electric, electricity, engineering, exchange, fan, fresh, heat, hvac, industrial, industry, machinery, mechanical, metal, modern, part, pipe, pipes, power, pump, shiny, silver, steel, structure, system, systems, technology, temperature, tube, turning, vent, ventilation, warm,