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| 空气-水系统 | |||
| 空气水系统 | |||
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air-water system : 20 phrases in 7 subjects |
| Architecture | 1 |
| Aviation | 1 |
| Electronics | 1 |
| Hydroelectric power stations | 1 |
| Metallurgy | 1 |
| Refrigeration | 11 |
| Technology | 4 |
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