Ключевые слова: abrasive, aerospace, automated, blade, builder, circle, concepts, construction, cutoff, cutter, cutting, danger, disc, disk, electric, energy, engineering, equipment, factory, finishing, flame, grind, grinder, heat, industrial, industry, iron, machine, machinery, man, manufacturing, metal, metallic, metalwork, motion, sharpen, sharpening, spark, sparkles, sparks, speed, spin, steel, technology, tool, wheel, work, worker,