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铰 接的 : 34 phrases in 9 subjects |
| Architecture | 1 |
| Automobiles | 9 |
| Aviation | 1 |
| Bridge construction | 1 |
| Drilling | 1 |
| General | 2 |
| Metallurgy | 1 |
| Technology | 17 |
| Wind Energy | 1 |
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