| 1. | Research on hardrock step control blasting technology
硬岩台阶控制爆破技术研究 |
| 2. | Aubema - product range - impact hammer crushers
Aubema -供货范围围-硬岩锤式破碎机 |
| 3. | Study and practice of raising explosive efficiency in hard rock
提高硬岩巷道爆破效率的研究与实践 |
| 4. | Hammer mills hammer mills impact hammer mills
硬岩锤式破碎机 |
| 5. | Feed materials : hard rock , different types of ore , limestone and gypsum
给料：硬岩矿砂石灰岩石膏。 |
| 6. | Drill and blast method of tunnel excavation on hard rock
硬岩地铁隧道钻爆法开挖结合盾构法衬砌的施工技术 |
| 7. | Several technical measures for hard rock cutting by ebj - 160 roadheader
160型掘进机切割硬岩的几点技术措施 |
| 8. | Hammer mills impact hammer mills
硬岩锤式破碎机 |
| 9. | Practice and understanding in deep - hole blasting for hard rock roadway development
硬岩巷道中深孔爆破的实践与认识 |
| 10. | Hard to strong - hard rock
硬岩-坚硬岩石 |
