汽车主减速器壳加工自动线
automatic production line for automobile final drive housing
双级双速主减速器
two speed double reduction final drive
行星齿轮式双速主减速器
two speed planetary final drive
带主减速器的变速器
final driving transmission
单级主减速器
single reduction final drive
后置式双级主减速器
rear mounted double reduction final drive
前置式双级主减速器
front mounted double reduction final drive