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very low nitrogen
| process
| very low nitrogen | |
| met. | 极低氮 |
| process | |
| gen. | 过 程; 工 序; 工艺 |
| archit. | 流程; 工艺规程 |
| hydroel.st. | 过程; 进程; 步骤; 程序 |
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| 极低氮 | |||
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very low nitrogen process : 8 phrases in 1 subject |
| Metallurgy | 8 |
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