短语词组短语axle drive pinion shaft 车轴主动小齿轮轴drive pinion and shaft 主动小齿轮及轴drive pinion shaft assembly 主动小齿轮轴总成drive pinion shaft 主动小齿轮轴swing drive output pinion shaft 转盘驱动装置输出小齿轮轴 返回 pinion drive shaft