用underhand stoping造句子，“underhand stoping”造句
來源：國語幫 6.39K
2、There are several techniques for working the face of the stope. Overhand stoping indicates working from a lower to an upper level; underhand stoping is the opposite, from an upper level to a lower level.
1、Overhand stoping indicates working from a lower to an upper level; underhand stoping is the opposite, from an upper level to a lower level.
