a set of bearings in a machine, supporting a revolving part (机器中支撑旋转部分的)轴承组 ■the widened piece at the end of the neck of a guitar, to which the tuning pegs are fixed 指板头(吉他指板顶端有调音栓的较宽阔部分)
the horizontal end member of the underframe of a railway vehicle 机头座