pneumatic core shaft

例句：

1. 1.The pneumatic core shaft is crucial for the operation of the machine.
   气动核心轴对于机器的运行至关重要。
2. 2. The engineer designed a pneumatic core shaft that could withstand high pressure.
   工程师设计了一个能承受高压的气动核心轴。
3. 3. The pneumatic core shaft was used to rotate the gears in the machine.
   气动核心轴被用来转动机器中的齿轮。