slide shaft

例句：

1. 1. The engineer designed a new slide shaft for the machine.
   工程师为机器设计了一个新的滑道轴。
2. 2. The construction workers used a slide shaft to lift the heavy equipment.
   建筑工人使用滑道轴来提升重型设备。
3. 3. The engineer carefully tested the slide shaft before installing it in the machine.
   工程师在安装机器之前仔细测试了滑道轴。