Ключевые слова: abstract, background, black, circle, closeup, crane, dirt, dust, engineering, factory, faucet, grip, handle, heavy, ideas, industrial, industry, iron, knob, macro, manufacturing, metal, metallurgy, military, mining, navy, object, obsolete, old, outdated, pattern, plant, retro, rotate, round, section, steam, steel, submarine, technology, turning, valve, water, worn,