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Terms for subject Oil / petroleum containing drilling cost | all forms | exact matches only | in specified order only
| English | Chinese |
| cost of drilling engineering | 钻井工程成本 |
| drilling cost control system | 钻井成本控制系统 |
| drilling cost per foot | 每英尺钻进成本 |
| unit cost of drilling engineering | 钻井工程单位成本 |