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| 氮气气氛 | |||
| 氮保护气氛 | |||
| 氮气氛; 氮气层 | |||
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nitrogen atmosphere : 11 phrases in 6 subjects |
| Agriculture | 1 |
| Electronics | 1 |
| General | 1 |
| Metallurgy | 5 |
| Technology | 1 |
| Thermal Energy | 2 |
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