underhand stoping

同义词释义

1)underhand stoping,下向梯段回采2)bottom stoping,下向梯段回采3)underhand stopping,下向梯段回采4)downward,下向5)down weld,下向焊6)downward welding,下向焊7)downward flow,下向流8)downward drift,下向进路9)bottom-up approach,自下向顶10)down-oriented-tree,下向树