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| decompression hold | |||
| decompression chamber | |||
| pressure-relief tank | |||
| 减压舱: 21 phrases in 7 subjects |
| Aviation | 4 |
| Navigation | 3 |
| Oil / petroleum | 1 |
| Shipbuilding | 1 |
| Space | 6 |
| Submarines | 2 |
| Technology | 4 |
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