Ключевые слова: background, circle, close, concept, cylinder, design, detail, engineering, factory, gray, group, hard, hole, industrial, industry, iron, item, lathe, machine, machined, macro, manufacturing, many, mechanical, metal, metallic, milling, object, part, parts, pile, product, production, round, rust, shiny, stack, stainless, steel, technology, thread, tool, warehouse,