1) track roller cap
履带支重轮罩盖
2) track roller cap group
履带支重轮罩盖组
3) track roller guard
履带支重轮护罩
4) track roller guard bolt
履带支重轮护罩螺栓
5) track roller guard group
履带支重轮护罩组件
6) track idler cap
履带引导轮罩盖
参考词条