| 1. | Two vertical shafts connected by a cross - over channel ,之间由一个交叉通道相连接。 |
| 2. | Grouting technique into the wall of vertical shaft 立井壁后注浆施工工艺 |
| 3. | This vertical shaft kiln type allows the 这个竖窑类型允许 |
| 4. | Surface grinding wheel vertical shaft 平面研磨砂轮立轴式 |
| 5. | J . vertical shaft fine adjustment screw 垂直杆微调螺丝 |
| 6. | Construction of vertical shaft passing through drift sand and experience lesson 立井过流砂施工及经验教训 |
| 7. | Probe into the causes of the displacement and deformation of the vertical shaft 对竖井移动变形原因的探讨 |
| 8. | Construction technique for freezing grout in inner wall of vertical shaft 冻结立井井筒壁内注浆封水施工技术 |
| 9. | The miners were trapped after three vertical shafts were flooded 这个铁矿的三个竖井发生透水,将矿工困在了井下。 |