Ключевые слова: abrasive, arm, blade, borer, circle, circular, construction, cut, die, disc, disk, drill, electric, equipment, factory, flash, grind, hand, industrial, industry, iron, lathe, light, machine, manual, manufacture, manufacturing, metal, part, power, radial, repairing, rotate, rounding, safety, saw, sharpen, sharpening, spark, speed, steel, technical, technology, tool, turning, welding, wheel, work, worker, workshop,