凸轮轴驱动齿轮盖
camshaft drive gear cover
凸轮轴驱动齿轮盖组件
camshaft drive gear cover group
凸轮轴齿轮齿间隔
camshaft gear tooth space
滚子齿轮凸轮机构
Roller-gear Cam Mechanism
内轴凸轮轴装配
Axle shaft of pump assembly
喷油泵凸轮轴凸角
fuel injection pump camshaft lobe
前凸轮轴轴承连接处
front camshaft bearing joint location