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	文档标题 发布日期 Tight sandstone gas fracturing with a million cubic meters o... 2025-02-13 15:54:57 Tight sandstone gas fracturing operation sight 2025-02-13 15:54:57 Fracturing scene of deep coal seam demonstration well platfo... 2025-02-13 15:54:57 The first onshore unconventional drainage gas recovery busin... 2025-02-13 15:54:57