Ключевые слова: angle, blade, circle, circular, construction, cut, cutting, disc, disk, electric, engineering, equipment, factory, fire, flash, grind, grinder, hand, heat, industrial, industry, iron, job, light, machine, man, manual, manufacture, manufacturing, mechanic, metal, power, production, protection, rotate, round, safety, saw, spark, speed, steel, technical, technology, tool, turning, welding, wheel, work, worker, workshop,