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阀 门的 : 41 phrases in 13 subjects |
| Agriculture | 1 |
| Architecture | 1 |
| Automobiles | 4 |
| Aviation | 4 |
| Chemistry | 1 |
| Drilling | 1 |
| Engineering geology | 1 |
| General | 7 |
| Hydroelectric power stations | 1 |
| Nautical | 3 |
| Shipbuilding | 1 |
| Technology | 15 |
| Water resources | 1 |
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