rail gap adjuster

例句：

1. 1. The engineer used therail gap adjuster to ensure the trains ran smoothly.
   工程师使用铁轨间隙调节器确保火车运行顺畅。
2. 2. The new railgap adjuster is designed to improve safetyand efficiency on the railway.
   新型的铁轨间隙调节器旨在提高铁路的安全性和效率。
3. 3. The adjustment of the rail gap wascrucial for the smooth operation of the train.
   对铁轨间隙的调整对于火车的平稳运行至关重要。