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气 流调节 : 48 phrases in 11 subjects |
| Automobiles | 3 |
| Aviation | 4 |
| Drilling | 1 |
| Ecology | 2 |
| Electronics | 2 |
| Metallurgy | 5 |
| Refrigeration | 2 |
| Space | 1 |
| Submarines | 1 |
| Technology | 26 |
| Textile industry | 1 |
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