变速器主动齿轮轴
transmission drive gear shaft
差速器主齿轮轴
differential pinion-shaft
差速器主小齿轮轴承罩
differential drive pinion cage bearing
调速器主接力器
Main servomotor of governor
多自主机器人
multiple autonomous robots
飞机主机械操纵系统
main mechanical manipulating system of aeroplane
集装箱装卸机主机架
container handler main frame
加速器主体结构
body structure of accelerator