Ключевые слова: background, brown, cap, circle, circular, coil, composition, curve, cylinder, cylindrical, design, element, group, heap, hole, hollow, image, industry, long, manufacturing, material, millboard, mouth, object, ordered, outline, pattern, perpendicular, perspective, pipe, pipeline, produce, product, profile, ring, rolled, round, row, section, shape, stack, stem, stock, string, supply, technology, texture, tube, warehouse,