Gearset case齿轮箱
nonclashing gearset常啮合齿轮组
planetary gearset行星小齿轮
supplementary gearset s副变速器齿轮组
spur-gearset正齿轮组
compound d planetary gearset复式行星齿轮组
compound planetary gearset复式行星齿轮组
Silent Mesh Gearset无声啮合齿轮组;无声啮合轮组