Ключевые слова: abstract, background, building, bulk, carving, circle, construction, engineering, equipment, fasteners, fastening, heap, hole, industrial, industry, iron, large, laying, lies, macro, many, material, matiz, metal, metallic, object, part, pattern, pile, repair, ring, roofing, round, scattering, sharp, shop, silver, small, steel, texture, tools, washer, washers, work,