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Keywords: chemical, concrete, couples, electric, electricity, energy, engineering, equipment, facility, factory, fuel, gas, gasoline, hard, heat, heavy, industrial, industry, insulation, iron, line, manufacturing, metal, mineral, oil, pairs, pipe, pipeline, piping, plant, power, pump, reflection, resources, rusty, sewage, sewages, shine, stainless, steampunk, steel, technology, traffic, transportation, tube, valve, warmth, water, work