Ключевые слова: black, building, business, change, city, constructing, construction, corrosion, district, energy, engineering, foam, gas, ground, groundwork, heap, heat, heating, industrial, infrastructure, insulated, insulation, line, main, many, material, municipal, natural, new, partially, perspective, pile, pipe, pipelane, pipeline, polyurethane, rain, repair, road, row, rusty, steel, thermal, transfer, trench, tube, tubular, underground, water, working,