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| 黏性沥青; 稠重地沥青 | |||
| 重稠沥青 | |||
| 重质石油沥青 | |||
| 重沥青 | |||
| 重质沥青 | |||
| 重石油沥青; 重质沥青; 稠地沥青 | |||
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heavy asphalt : 8 phrases in 3 subjects |
| Drilling | 2 |
| Oil / petroleum | 5 |
| Technology | 1 |
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