“后轴”的英语？

后轴负荷最重的分量.The rear axle carries the greatest weight.公共汽车的后轴断了.The back axle of the bus was broken.甚麽因素阻止了脊髓损伤后轴突的再生?What stop axonal regeneration in Spinal Cord Injury?...

“后轴”的拼音为：hòu zhóu...