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硬沥青水泥
| 添加剂
| 硬沥青水泥 | |
| oil | gilsonite cement |
| 添加剂 | |
| environ. | additive |
| hydroel.st. | additive |
| met. | added material; addition; additives; affix; dope; improver |
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| gilsonite cement | |||
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硬沥青水泥 : 1 phrase in 1 subject |
| Drilling | 1 |
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