高气压环形潜孔钻机是地下矿山高阶段大直径深孔采矿的关键设备。

High pressure ring-shaped DTH drills are key equipment for underground high level large diameter long hole mining.

youdao

高气压环形潜孔钻机是地下矿山高阶段大直径深孔采矿的关键设备。

High pressure ring-shaped DTH drills are key equipment for underground high level large diameter long hole mining.

youdao