Ключевые слова: ammonia, architecture, background, blue, building, chemical, chemistry, complex, crude, duct, engineering, environment, equipment, exterior, factory, fuel, gas, heavy, high, industrial, industry, iron, landscape, machine, metal, nobody, oil, petrochemical, pipe, pipeline, plant, pollution, production, reactor, refinery, silver, sky, smoke, station, steel, structure, tank, technology, tower, tube, workshop,