5 results on '"Zheng, Xigui"'
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2. Automatic identification of rock formation interface based on borehole imaging
3. Statistical analysis of fatalities in underground coal mines in Pakistan
4. Research on borehole forming characteristics of two-wing polycrystalline diamond compact bit in coal mines
5. Measurement and analysis of penetration rate and vibration on a roof bolter for identification rock interface of roadway roof
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