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| 优质钢 | |||
| 合金钢; 特殊钢; 优质〔特殊，合金〕钢 | |||
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fine steel : 16 phrases in 5 subjects |
| Compressors | 2 |
| Metallurgy | 9 |
| Nautical | 1 |
| Steel production | 1 |
| Technology | 3 |
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