spur friction wheel

例句：

1. 1. The new model of the car has a more powerful engine and a larger spur friction wheel.
   这款汽车的新型号拥有更强大的引擎和更大的激励摩擦轮。
2. 2.The train's wheels are made of high-quality steel, which helps it run smoothly with its large spur friction wheel.
   火车的车轮是由高质量的钢材制成的，这有助于它以大型激励摩擦轮平稳运行。
3. 3. The machine's design is optimized for efficiency, featuring a smaller but more efficient spur friction wheel.
   该机器的设计旨在提高效率，其设计较小但效率更高，采用了较小的但更高效的激励摩擦轮。