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| air-tight | |||
| 气密式: 22 phrases in 10 subjects |
| Animal husbandry | 2 |
| Aviation | 1 |
| Compressors | 1 |
| Economy | 1 |
| Electronics | 3 |
| Information technology | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Space | 2 |
| Technology | 9 |
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