Ключевые слова: blue, chemical, construction, cylinder, efficiency, engineering, eu, europa, facility, factory, field, fuel, gas, gas pipeline, green, grey, heat, hydrogen, industrial, industry, infrastructure, liquid, molecular, natural, oil, oxygen, pipe, pipeline, pipelines, plumbing, pollution, power, pressure, production, pump, refinery, spring, station, steam, steel, stream, supply, tower, transport, transportation, trucking, urban, water, water supply,