pit scale s矿山秤
mechanical pit scale机械地中衡
scale pit铁皮坑;氧化皮坑
large-scale pit大型基坑
fish scale pit[土壤] 鱼鳞坑
rougher scale pit粗轧机铁皮坑
small-scale pit小型基坑
fish-scale pit鱼鳞坑
finisher scale pit精轧机鳞皮坑