| 1. | Ride the train to the ventilation shaft
乘火车到达通风井找到柱状物体。 |
| 2. | Linkage measure technique of ventilation shaft in qidong coal mine
利用井下不通视点测设中线的方法 |
| 3. | Planning of near - shaft network of west ventilation shaft in xinii coal mine
新集矿西风井近井网的布设 |
| 4. | Breaking causes and repair technology of east mine ventilation shaft in sihe mine
寺河矿东风井筒断裂原因及治理技术 |
| 5. | It ' s a ventilation shaft
这是通风管道 |
| 6. | Circular ventilation shaft
圆形通风井 |
| 7. | Pregrouting technology at surface ground for ventilation shaft sinking in liuzhuang mine
刘庄煤矿回风井井筒地面预注浆技术 |
| 8. | Mine shaft sinking technology with ground freezing method for east ventilation shaft of qidong mine
祁东煤矿东风井冻结法凿井施工技术 |
| 9. | Drilling and blasting technology for hard rocks in new inclined ventilation shaft of zhangxin mine
张新矿新斜风井坚硬岩石凿岩爆破技术 |
| 10. | Grouting reinforcement and excavation construction technology for divulged yellow clay of ventilation shaft
风井透溃黄泥注浆加固掘进施工技术 |
