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back bolting meaning in English

顶板杆柱支护
顶板锚杆支护

Related Words

  1. charged bolt
  2. aircraft bolt
  3. casement bolt
  4. bolt barrel
  5. retaining bolt
  6. heart bolt
  7. shingle bolt
  8. shoulder bolt
  9. jacking bolt
  10. bolt lands
  11. back boiler
  12. back boiling
  13. back bond
  14. back bonding
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