elastic rail fastening

例句：

1. 1. The engineer used elastic rail fastening to reinforce the structure.
   工程师使用弹性轨道固定来加固结构。
2. 2. The new design uses elastic rail fastening to improve stability.
   新设计使用了弹性轨道固定来提高稳定性。
3. 3. The car's suspension system is designed with elastic rail fastening for better handling.
   汽车的悬挂系统设计有弹性轨道固定，以获得更好的操控性能。