Ключевые слова: background, blue, business, close, construction, control, device, energy, engineering, equipment, factory, fuel, gas, hand, handle, industrial, industry, iron, line, manual, metal, metallic, object, oil, old, open, petroleum, pipe, pipeline, plant, platform, power, power station, pressure, process, production, pump, refinery, rig, steel, supply, system, technology, transfer, transportation, tube, valve, water, wheel,