1. The wheel rides on the axle. 
   车轮在轴上转动。
2. He set the wheel on the axle. 
   他把轮子装在轴上。
3. Thus a wheel revolves on its axle. 
   于是，轮子在轴上旋转。
4. A locking pin inserted in the end of a shaft, as in an axle, to prevent a wheel from slipping off. 
   车辖，制轮装在辕底部，如车轴上用来预防车轮滑动锁栓
5. A metal pivot or journal at the end of a shaft or an axle, around which a wheel or other device turns. 
   轮轴，枢轴在车辕或车轴某端的枢轴或轴颈，车轮或其它装置绕其旋转

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• 1. 轮轴压检吨数
  checked edge || (板, 带材的)裂边...checked mounting tonnage of wheel and axle || 轮轴压检吨数...checked surface || 龟裂表面
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