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| 氮气 | |||
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nitrogen gas : 23 phrases in 11 subjects |
| Agriculture | 1 |
| Compressors | 2 |
| Ecology | 1 |
| Electronics | 2 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Oil processing plants | 2 |
| Refrigeration | 1 |
| Space | 3 |
| Technology | 8 |
| Textile industry | 1 |
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