PDF(1720 KB)
PDF(1720 KB)
PDF(1720 KB)
深孔爆破一次成井炮孔合理堵塞长度
({{custom_author.role_cn}}), {{javascript:window.custom_author_cn_index++;}}Blast-hole Reasonable Stemming Length for Raise Excavation Using One-step Deep-hole Blasting
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