runnern.赛跑的人;跑步者
runner head废铸物
runner axle滚针
runner bush浇口杯,浇口圈
runner disc动轮盘
runner shoe仿形滑脚
runner boot滑刀式开沟器
runner gate横浇口
runner size流道尺寸
runner cone浇口锥
runner core[机] 分道砖