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underhand stoping造句

造句7.49K

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.

underhand stoping造句

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.

标签:造句 stoping