main spindle box

例句：

1. 1. The machine's mainspindle box is damaged, which affectsits operation.
   机器的主轴箱损坏了，影响其运行。
2. 2. Main spindle boxesare essential for maintaining the smooth operation ofmachinery.
   主轴箱对于保持机械的平稳运行至关重要。
3. 3. The technician quickly replaced the mainspindle box to fix the problem.
   技术员迅速更换了主轴箱以解决问题。