Ключевые слова: aeration, aering, air, aluminum, alumum, background, building, ceiling, cellar, chrome, circulation, cold, conditioner, conditioning, construction, cool, cooling, duct, electric, electricity, energy, engineering, exchange, fan, fresh, funnel, heat, hvac, industrial, industry, lamp, light, machinery, mechanical, metal, modern, pipe, power, pump, roof, silver, steel, storehouse, structure, supply, systems, temperature, tube, turning, ventilation, warm, zinc,