| 1. | Seamless steel tubes standard use diamond core dvilling
金刚石岩心钻探用无缝钢管 |
| 2. | Seamless steel tubes standard use diamond core drilling
金刚石岩心钻探用无缝钢管 |
| 3. | Diamond core drilling equipment wire line system
金刚石绳索取心钻探钻具设备 |
| 4. | Diamond core drilling equipment - wire line system
金刚石绳索取心钻探钻具设备 |
| 5. | Diamond core drilling equipment conventional system
金刚石岩心钻探钻具设备 |
| 6. | Diamond drilling bits and diamond core bits
金刚石钻头及金刚石取心钻头 |
| 7. | Particular requirements for diamond core drills
金刚石岩芯钻特殊要求 |
| 8. | Factors affecting performance of sandwich - structured diamond core bits
影响夹层式钻头性能因素的研究 |
| 9. | Diamond core bit for coal drilling
煤田钻探金刚石取心钻头 |
| 10. | Standard for safety for particular requirements for diamond core drills
金刚石芯钻头的安全标准.特殊要求 |
