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bord and pillar method meaning in Chinese

房柱式开采法

Related Words

  1. bord
  2. bord down
  3. insrument bord
  4. bord bainne
  5. going bord
  6. bord up
  7. winning bord
  8. an bord bainne
  9. bord and pillar work
  10. bord and wall method
  11. borczvan
  12. bord
  13. bord and pillar work
  14. bord and wall method
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