back gear shaft背齿轮轴
back axle shaft后传动轴
back drive shaft bushing后主动轴衬套
back shaft scroll后轴涡轮
back-gear shaft后齿轮轴
JMWNY Back shaft后轴
back shaft station折返式井底车场
back shaft bracket后尾轴架
back-up shaft支持辊辊轴