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| 水箱模型; 槽式模型 | |||
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tank model : 14 phrases in 7 subjects |
| Chemistry | 1 |
| Ecology | 1 |
| Metallurgy | 1 |
| Nautical | 2 |
| Space | 1 |
| Technology | 7 |
| Water resources | 1 |
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