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Journal: Processes, 2025
Volume: 13
Number: 2195

Article: Key Parameter Optimization Study of Composite Rod Drill in Gas Extraction Borehole Drilling in Soft, Medium, and Hard Coal Seams
Authors: by Baoqiang Sun, Xuanping Gong, Xiaogang Fan, Xiangzhen Zeng and Xingying Ma
Link: https://www.mdpi.com/2227-9717/13/7/2195

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