stoping的知识精选

“underhand stoping”可以造什么句,underhand stoping造句
1、Overhandstopingindicatesworkingfromalowertoanupperlevel;underhandstopingistheopposite,fromanupperleveltoalowerlevel.2、Thereareseveraltechniquesforworkingthefaceofthestope.Overhandstopingindicatesw...
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