Ключевые слова: abstract, blade, blur, bokek, circular, construction, cut, cutting, defocus, diamond, disc, drill, electric, engineering, equipment, factory, grind, grinder, grinding, hand, industrial, industry, iron, light, machine, man, manual, manufacture, manufacturing, mechanic, metal, power, production, protection, safety, saw, sawing, spark, sparks, speed, steel, tool, welding, wheel, work, worker, workshop,