spiral shaft

例句：

1. 1.The machine has a spiral shaft that rotates at high speeds.
   这台机器有一个高速旋转的螺旋轴。
2. 2. The engineer used a spiral shaft to create the intricate design.
   工程师使用一个螺旋轴来创造复杂的设计。
3. 3. The spiral shaft is essential for the machine's operation.
   螺旋轴对于机器的运行至关重要。