Ключевые слова: beam, blade, circle, circular, cut, diamond, disc, disk, drill, electric, engineering, equipment, factory, flash, grind, grinder, hand, industry, iron, light, machine, manual, manufacture, manufacturing, metal, metal pipe, metal sawing, pipe, power, production, protection, rotate, round, safety, saw, sawing, spark, sparks, speed, spin, steel, technical, technology, tool, turning, welding, wheel, work, worker, workshop,