Ключевые слова: abstract, background, black, blue, bolt, broken, brown, color, concept, connection, construction, control, corrosion, dark, detail, distribution, energy, equipment, factory, fuel, gas, generation, green, grunge, industrial, industry, iron, metal, metallic, natural, nut, object, oil, old, orange, outdoors, painted, pipe, pipeline, plant, plumbing, power, rust, rusty, steel, technology, tube, valve, water, white,