overlying seam 中文意思是什麼

overlying seam 解釋
上部礦層
  • overlying : overlie 的現在分詞。
  • seam : n 1 縫;線縫。2 介面;接縫;接合處;接合線。3 裂縫。4 (臉上的)皺紋。5 傷痕。6 【造船】(船板間...
  1. Simulation on overlying strata ' s motion rule in shallow seam slice mining

    淺埋厚煤層分層開采覆巖移動規律模擬研究
  2. Numerical analysis on movement rule of overlying strata of shallow coal seam covered with thin bedrock

    淺埋煤層開采覆巖移動規律數值分析
  3. Numerical simulation study on effects of overlying rock and seam far way from protective coal seam

    遠程下保護層開採煤巖體卸荷效應模擬研究
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