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| 低含氧量衬底; 低氧衬底 | |||
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| 低氧 | |||
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low-oxygen : 31 phrases in 9 subjects |
| Agriculture | 3 |
| Aviation | 8 |
| Ecology | 1 |
| Metallurgy | 4 |
| Nursing | 1 |
| Oil processing plants | 2 |
| Space | 4 |
| Technology | 7 |
| Water resources | 1 |
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