auger shell

例句：

1. 1. The auger shell was damaged during the construction.
   在建设过程中，钻头壳受损了。
2. 2.The engineer carefully removed the auger shell to inspect the inside.
   工程师仔细地移除了钻头壳以检查内部。
3. 3. The auger shell is essential for drilling through rocky terrain.
   钻头壳对于穿透岩石地形至关重要。