| 1. | The larger reverse circulation bits used for drilling through pebbles
卵砾石层大直径反循环桩孔钻进用钻头 |
| 2. | Emulator analyse on rake angle of injector hole in reverse circulation bit
反循环钻头引射孔倾角的仿真分析 |
| 3. | Discussion on application effect of reverse circulation technique with drilling pale
钻孔桩反循环工艺应用效果初探 |
| 4. | Reverse circulation valve
反循环阀 |
| 5. | Experimental study of the reduced reverse circulation in thermosyphon solar water heater
防倒流循环家用太阳能热水器的实验研究 |
| 6. | The fault tree analysis of interruption of fluid in pump suction reverse circulation drilling
泵吸反循环钻进中循环液中断的故障树分析 |
| 7. | Cae on reverse circulation structure of buried pore hammer bit ofthrough model with gas - operated
贯通式气动潜孔锤钻头反循环结构的计算机辅助设计 |
| 8. | The practice amp; improvement of refit head dual channel reverse circulation main shaft about g - 3 engineering driller
3工程钻机动力头双通道反循环主轴改装实践 |
| 9. | The practice amp; amp; improvement of refit head dual channel reverse circulation main shaft about g - 3 engineering driller
3工程钻机动力头双通道反循环主轴改装实践 |
| 10. | This machine adopts two species of drillingtechnique of direct and reverse circulation , the efficiency enhances observably in the process of ovum , gravel and rock layer construction
该机可采用正反循环两种钻进工艺，在卵、砾、岩层施工中，效率显著提高。 |
