supercobalt drill

例句：

1. 1. The engineer used asupercobalt drill to make theholes in the metal sheet.
   工程师用超硬合金钻头在金属板上打孔。
2. 2. The supercobalt drill wasso powerful that it could easily cut througheven the toughest materials.
   超硬合金钻头非常强大，可以轻松切割最坚硬的材料。
3. 3. The supercobalt drillis essential for precision machining andcutting operations.
   超硬合金钻头对于精密加工和切削操作至关重要。