Ключевые слова: abstract, aluminum, background, blank, bright, circle, close, closeup, coat, cold, construction, cylinder, elements, exercise, galvanized, gas, gray, grey, group, grunge, industrial, industry, iron, light, line, macro, metal, metallic, modern, new, objects, oil, outline, pattern, pipe, pipeline, plate, reflection, ring, round, shape, shiny, silver, spiral, steel, technology, texture, tube, up, water,