spool management

例句：

1. 1. The engineer must manage the spool to prevent it from getting stuck.
   工程师必须管理线轴，以防止它卡住。
2. 2. The machine controls the spool to ensure uniformity in the weaving process.
   机器控制线轴以确保织布过程的均匀性。
3. 3. The operator operated the spool manually to adjust the tension.
   操作员手动操作线轴来调整张力。