PDF(1760 KB)
A New Method for Measuring and Grading of PDC Bit Rock Drillability
Yang Yingxin, Gao Xiang, Chen Hong, Chen Haijun, Chen Lian
Chinese Journal of Underground Space and Engineering ›› 2019, Vol. 15 ›› Issue (3) : 811-819.
PDF(1760 KB)
PDF(1760 KB)
A New Method for Measuring and Grading of PDC Bit Rock Drillability
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