分段式多档变速器
sectional type multi-speed tranmisssion
地面驱动变速器变速杆
ground drive transmission shift lever
半自动换档机械式变速器
semi-automatic mechanical transmission
常啮合式变速器
constant mesh transmission
后置式变速器
rear-set type speed variator
机械式变速器卡销弹簧
mechanical transmission detent spring
机械式变速器型号
mechanical transmission model
机械式四速变速器
mechanical four-speed transmission
全斜齿常啮式变速器
fully constant mesh all helical gear transmission
全直齿常啮式变速器
fully constant mesh all spur gear transmission