welt wheel

例句：

1. 1.The car's engine is located at the front of the welt wheel.
   汽车的引擎位于轮轴前端。
2. 2.The old bicycle had a rusty welt wheel that needed to be replaced.
   这辆旧自行车有一个生锈的轮轴，需要更换。
3. 3. The engineer carefully removed the welt wheel from the car and inspected it for damage.
   工程师小心翼翼地从汽车上拆下轮轴并检查是否有损坏。