centrifugal wheel and axle偏心轴
rail wheel and axle火车轮轴
wheel-and-axle轮轴
wheel-axle inspection and repair轮轴检修
worm-and-wheel axle蜗杆蜗轮式驱动桥
N(名词) a simple machine for raising weights in which a rope unwinding from a wheel is wound onto a cylindrical drum or shaft coaxial with or joined to the wheel to provide mechanical advantage 轮轴