齿轮轴滚柱轴承
gear shaft roller bearing
中间齿轮轴滚柱轴承
idler gear shaft roller bearing
半自动齿轮滚齿机
semi-auto gear hobbing machine
旋转伞齿轮滚齿机
spiral bevel gear generating machine
直齿柱齿轮
straight-teeth cylindrical gear
齿轮轮齿接触印痕
gear tooth contact pattern
复合轮齿齿轮副
complex wheel teeth gear set