Application of Single-acting Double-tube Core-drilling Technique in Unconsolidated and Fracture Strata

HAO Yong-sheng

Journal of Railway Engineering Society ›› 2010, Vol. 27 ›› Issue (6) : 32-35.

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Journal of Railway Engineering Society ›› 2010, Vol. 27 ›› Issue (6) : 32-35.

Application of Single-acting Double-tube Core-drilling Technique in Unconsolidated and Fracture Strata

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{{article.zuoZheEn_L}}. {{article.title_en}}[J]. {{journal.qiKanMingCheng_EN}}, 2010, 27(6): 32-35

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