Ключевые слова: angle, angular, armature, blade, circle, circular, construction, cut, cutter, danger, diamond, disc, disk, drill, electric, electrical, engineering, equipment, factory, flash, grind, grinder, hand, industry, iron, job, labor, machine, manufacture, manufacturing, mechanic, metal, occupation, power, production, protection, repair, round, saw, sawing, spark, speed, spin, steel, technical, technology, tool, wheel, work, workshop,