5 results on '"Shi, Zhijun"'
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2. Research and Application of Drilling Technology of Extended-reach Horizontally-intersected Well Used to Extract Coalbed Methane
3. Analysis and Application of Treatment Techniques in Horizontal Directional Drilling Borehole Accident
4. Research and Application of PDM Borehole Technology for HDD
5. The Underground Directional Drilling Technology and Equipments for Kilometer Deep Borehole with MWD in Coalmine
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