| 1. | One wall of the temple hospital crumbled, the roof caved in .
这个小庙医院的一堵墙倒塌了，屋顶陷下了。 |
| 2. | With the roof caving in, there were an increasing number of desertions .
由于大势已去，逃兵的人数日益增多。 |
| 3. | Some residents are concerned about their roofs caving in
一些担心他们的房顶有塌陷的危险。 |
| 4. | Theory analysis of gas hazard incident caused by roof caving
顶板垮落诱发瓦斯灾害的理论分析 |
| 5. | Forced roof caving technology and application to goaf - side entry retaining
沿空留巷锚杆支护技术研究及应用 |
| 6. | Gas control technique for non - mechanized face with roof caving mining
分层非综采放顶煤工作面瓦斯治理技术分析 |
| 7. | The design of light - duty roof caving coal hydraulic support equipped with flat tramcar
轻型放顶煤液压支架配套平板车设计 |
| 8. | Practise in combined mining roof caving coal at lower position in large angle thick coal seam
大倾角厚煤层低位综采放顶煤实践 |
| 9. | First roof caving
直接顶初次垮落 |
| 10. | Analysis of the way for the main roof caving relating to the staggered sublevel caving method
错层位放顶煤方法老顶垮落方式分析 |
