Ключевые слова: abstract, aging, aluminum, backgrounds, bolt, building, color, colored, construction, dirty, feature, frame, fuselage, gray, grunge, heavy, horizontal, industry, iron, level, macro, material, metal, military, objectsequipment, old, part, pattern, plate, protection, rivet, rough, row, sheet, shiny, smooth, solid, steel, surface, textured, tool, vehicle, wall, work,