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| 八叠板; 【压】 八层叠板 | |||
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double-double iron : 36 phrases in 9 subjects |
| Architecture | 4 |
| Bridge construction | 1 |
| Construction | 1 |
| Drilling | 1 |
| General | 2 |
| Golf | 2 |
| Metallurgy | 10 |
| Technology | 14 |
| Water resources | 1 |
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