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| химически связанное железо | |||
| 化合铁: 20 phrases in 8 subjects |
| Chemistry | 1 |
| Electronics | 1 |
| General | 11 |
| Geochemistry | 1 |
| Medical | 1 |
| Oil / petroleum | 2 |
| Oil processing plants | 1 |
| Technology | 2 |
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