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| countercurrent air flow | |||
| 对流风流: 25 phrases in 10 subjects |
| Aviation | 1 |
| Earth sciences | 1 |
| Hydroelectric power stations | 1 |
| Metallurgy | 2 |
| Project management | 1 |
| Refrigeration | 4 |
| Space | 1 |
| Technology | 9 |
| Textile industry | 3 |
| Wind Energy | 2 |
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