downhole partial reverse circulation
| tool
| downhole partial reverse circulation | |
| tech. | 孔底局部反循环 |
| tool | |
| dril. | 工 具 |
| hydroel.st. | 量具 |
| hydroel.st. од. | 工具 |
| mech. | 钻杆 |
| met. | 刃具; 刀具; 方法; 手段 |
| met. од. | 器械 |
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| 孔底局部反循环 | |||
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downhole partial reverse circulation : 2 phrases in 1 subject |
| Technology | 2 |