關於stoping的百科

• underhand stoping造句怎麼寫

• 1、Overhandstopingindicatesworkingfromalowertoanupperlevel;underhandstopingistheopposite,fromanupperleveltoalowerlevel.2、Thereareseveraltechniquesforworkingthefaceofthestope.Overhandstopingindicatesworkingfromalowertoanupperlevel;underhandstopingist...
• 2023-12-275638