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tunnel roof fall meaning in English

隧道坍顶

Related Words

  1. tunnel correction
  2. undersea tunnel
  3. grade tunnel
  4. tunnel form
  5. medium tunnel
  6. tunneling effect
  7. underground tunnel
  8. avalanche tunnel
  9. sewer tunnel
  10. freezing tunnel
  11. tunnel ring
  12. tunnel roof
  13. tunnel safety
  14. tunnel safety week
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