Ключевые слова: abstract, architecture, background, barrel, black, blue, building, business, chemistry, city, concert, concrete, dark, design, element, energy, engineer, equipment, factory, gas, glow, illustration, industrial, industrialplant, industry, job, light, line, machine, metal, night, pipeline, piping, plant, power, production, pump, refinery, resources, shine, spark, speed, steel, technology, urban, valve, work,