quenched alloy steel rail

例句：

1. 1. The engineers carefully quenched the steel rail to ensure its strength and durability.
   工程师们仔细地淬火钢轨，以确保其强度和耐用性。
2. 2.The railway line is equipped with quenched alloy steel rails, making it highly resistant to wear and tear.
   这条铁路线配备了淬火合金钢轨，使其具有很高的抗磨损能力。
3. 3. The train's wheels are made of quenched alloy steel rails, providing a smooth and stable ride.
   火车的轮子是由淬火合金钢轨制成的，提供了平稳舒适的行驶体验。