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| гильсонит; юинтаит | |||
| джильсонит; пиробитум | |||
| альбертит; нигрит (一种绝缘料); пиробитум (альбертит) | |||
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| альбертиты | |||
| 黑 沥青: 5 phrases in 3 subjects |
| General | 3 |
| Geology | 1 |
| Technology | 1 |
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