rotary shaft set bolt

例句：

1. 1.The rotary shaft set bolt is used to fix the machine's rotational axis.
   旋转轴套螺栓用于固定机器的旋转轴线。
2. 2.The engineer carefully assembled the rotary shaft set bolt before starting the machine.
   工程师在启动机器之前仔细组装了旋转轴套螺栓。
3. 3. The rotary shaft set bolt was a critical component of the machine's operation.
   旋转轴套螺栓是机器运行的关键部件。