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Keyword [hierarchies]
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1. Research On Drillability And Bit Selection Of Igneous Rock Layer In North Of Songliao Basin
2. Based On Physical Model Of Flexible Cloth Simulation Study With Key Technologies
3. Analysis And Research On WuGou Coal Mine Geological Structure
4. Assessment Of Reclamation Evaluation On Luan Mining
5. Comparative Analysis Of Correlation Between Water Quality And Land Use Pattern Of Different River Hierarchies
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