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технология по бурению
| глубоких скважин
| технология по бурению | |
| dril. | 钻井工艺 |
| глубокая скважина | |
| tech. | 深的井; 深井 |
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| 钻井工艺 | |||
| технология по бурению: 2 phrases in 1 subject |
| Drilling | 2 |
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