小齿轮传动超越离合器
pinion drive overrunning clutch
小齿轮传动箱壳总成
pinion drive housing assembly
小齿轮传动箱壳螺栓
pinion drive housing bolt
小齿轮传动箱壳螺钉
pinion drive housing screw
小齿轮传动装置弹簧
pinion drive spring
pinion drive assembly spring
斜齿轮传动
helical gearing
helical gear transmission
内齿轮传动
automatic thermo type fire alarm
internal gear drive