Ключевые слова: abstract, background, blue, bright, circle, coil, color, concentric, corrugated, dark, funnel, gold, golden, goldish, industrial, industry, inside, iron, light, material, metal, metallic, mouth, orange, pattern, pipe, pipeline, reflected, reflection, round, shape, shine, silver, silvery, stainless, steel, technology, textured, tube, tubing, tubular, tunnel, view, white, yellow, zinked,