Ключевые слова: bending, bolt, curved, design, engineering, equipment, evolution, extrusion, fabricating, fabrication, factory, fix, fixing, folding, geometric, grey, heavy, industrial, industry, iron, ironworks, machinery, making, manufacture, manufacturing, mechanism, metal, metallic, metalwork, nut, part, person, plant, precision, preparation, screw, shaped, sheet, silver, stack, steel, stock, strength, technology, wafers, washer, work, worker, working, workshop,