Ключевые слова: bridge, city, conduit, construction, delivering, delivery, district, energy, engineering, equipment, fuel, gas, heat, hot, housing, industrial, industry, infrastructure, lead, line, main, metal, oil, petrol, petroleum, pipe, pipeline, piping, power, pressure, resources, security, serve, service, sky, steam, steel, structure, supply, system, technology, transfer, transit, transmission, tube, tubing, water,