vertical shaft liner

例句：

1. 1. The machine's vertical shaft liner is worn out, which affects its performance.
   这台机器的垂直轴衬磨损了，影响了其性能。
2. 2. The engineer inspected the verticalshaft liner to ensure it was ingood condition.
   工程师检查了垂直轴衬以确保它处于良好状态。
3. 3. Themaintenance team replaced the worn-out vertical shaft linerwith a new one.
   维护团队用一个新的垂直轴衬替换了磨损的轴衬。