Ключевые слова: abrasive, blade, borer, business, circle, circular, closeup, cutter, disk, drill, electric, engineering, equipment, factory, grind, grinding, grindstone, hand, industry, metalwork, mower, polishing, power, repair, saw, sharp, sharpener, sharpening, sparks, speed, steel, stone, strength, technology, textured, tool, welding, wheel, work, worker, workshop,