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| 科伦布菊石属 | |||
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| 铌铁矿 ((Fe, Mn)(Nb, Ta)2O6) | |||
| 铌铁矿 | |||
| English thesaurus | |||
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| manganocolumbite (lxu5) | |||
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Columbites : 4 phrases in 3 subjects |
| Chemistry | 1 |
| Metallurgy | 2 |
| Technology | 1 |
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