roof-bolting stoper的意思|示意

美 / / 英 / /

杆柱钻孔机

杆柱钻孔机 ... 杆柱孔钻车 roof-bolting jumbo; roof-pinning jumbo; 杆柱钻孔机 roof-bolting stoper; 杆柱钻孔真空清扫器 bolthole vacuum cleaner ...