Ключевые слова: connection, construction, crude, delivery, distribution, energy, engineering, finance, flow, fluid, frame, fuel, gas, gasoline, heat, horizon, horizontal, industrial, industry, infrastructure, installation, liquid, long, many, meadow, metal, natural, natural gas, nature, no people, oil, perspective, petroleum, pipe, pipeline, plain, power, products, resource, sky, steel, supply, system, technology, three dimensional, transport, transportation, tube, working,