Ключевые слова: abstract, background, barrier, big, black, bond, boundary, brown, cast iron, chain, closeup, connection, dark, detail, element, equipment, grey, heavy, horizontal, industrial, industry, iron, knitted, link, macro, material, metal, metallic, monochrome, object, oval, port, power, powerful, pressure, protection, ring, rough, row, rust, rusty, safety, security, separate, shiny, ship, steel, strength, strong, system, team, texture, thick, weathered,