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| nitrogen oxide | |||
| compounds of nitrogen and oxygen; oxynitride | |||
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| nitrogen oxide | |||
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氮氧化合 物 : 11 phrases in 7 subjects |
| Automobiles | 3 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 1 |
| Metallurgy | 1 |
| Pharmacology | 3 |
| Space | 1 |
| Technology | 1 |
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