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| 应急压缩空气 | |||
| emergency air: 20 phrases in 9 subjects |
| Aviation | 3 |
| Ecology | 1 |
| Electronics | 3 |
| Information technology | 1 |
| Nautical | 3 |
| Rail transport | 2 |
| Shipbuilding | 2 |
| Technology | 4 |
| United States | 1 |
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