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15-eg1053cl

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In order to reduce the occurrence of drilling accidents in soft coal seams. this paper analyzes the causes of near-horizontal hole drilling under the coal mine and the formation process of jamming. and establishes a drilling mechanical model for each stage. Through the analysis of the main influencing factors of the sticking drilling. https://www.roneverhart.com/HP-Pavilion-15-eg1053cl-15-6-FHD-Touch-Intel-Core-i5-1235U-3-30-GHz-Intel-Iris-Xe-Graphics-12-GB-DDR4-RAM-512-GB-SSD-/

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