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| 脱氮［作用］ (denitrogenatio) | |||
| 除去氮法; 脱除氮作用 | |||
| 排氮 | |||
| 去氮法; 脱氮 | |||
| 除氮; 脱氮 (作用) | |||
| 脱氮 (法); 除氮法 | |||
| 脱氮作用 | |||
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denitrogenation : 5 phrases in 4 subjects |
| Chemistry | 2 |
| Oil / petroleum | 1 |
| Space | 1 |
| Technology | 1 |
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