短语词组短语railway axle box bearing 铁路车辆轴箱轴承;铁路轴箱轴承axle suspension bearing box 抱轴箱rolling axle suspension bearing box 滚动抱轴箱Plain bearing axle box 滑动轴承箱roller bearing axle box 滚子轴承轴箱 返回 axle box bearing