PDF(727 KB)
PDF(727 KB)
PDF(727 KB)
河台金矿高村矿区至云西矿区运输平巷贯通测量
({{custom_author.role_cn}}), {{javascript:window.custom_author_cn_index++;}}Lane Perforation Measuring for Transportation from Gaocun to Yunxi Mine District in Hetai Gold Mine
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