Ключевые слова: circulation, climate, condition, control, cool, curve, distribution, engineering, exchange, factory, fan, flow, gas, hall, heat, horizontal, improvement, indoors, industrial, installing, machinery, many, material, mechanical, metallic, motion, motor, multiple, network, no people, order, parts, power, pressure, pump, room, silver, stainless, steel, structure, supply, system, tube, ventilation, warm,