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first roof caving meaning in English

直接顶初次垮落

Examples

  1. First roof caving
    直接顶初次垮落
  2. Practice of first roof caving technology at comprehensive mechanical mining face in steep thick coal seam
    急倾斜特厚煤层综放工作面超段高初次放顶的实践

Related Words

  1. hot cave
  2. roofing copper
  3. pectine roof
  4. imperial roof
  5. accessible roof
  6. roof foundering
  7. slate roof
  8. roof inclination
  9. lvye roof
  10. roof mountain
  11. first river
  12. first roller
  13. first roughing tap
  14. first round
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