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pillar extraction drilling meaning in Chinese

煤柱回采钻眼

Examples

  1. Pillar extraction drilling
    煤柱回采钻眼

Related Words

  1. pillar method
  2. pillar stiffener
  3. coral pillar
  4. pillar operation
  5. bringback pillar
  6. built pillar
  7. hollow pillar
  8. sun pillar
  9. granite pillar
  10. draw pillars
  11. pillar estate
  12. pillar extraction
  13. pillar face
  14. pillar file
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