Ключевые слова: background, business, chemical, chemistry, color image, connection, construction, crude oil, dusk, energy, engineering, environment, equipment, evening, factory, fuel, fuel and power generation, gas, gasoline, heavy, horizontal, industrial, industry, liquid, machine, manufacture, manufacturing, metal, no people, oil, oil industry, petrochemical, pipe, pipe tube, pipeline, plant, pollution, power, pressure, production, refinery, sky, stainless, steel, storage, supply, technology, tower, transportation, tube,