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| мальм | |||
| известковый песчаник; мергелистый песчаник | |||
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灰 砂 岩 : 45 phrases in 6 subjects |
| Electronics | 2 |
| General | 14 |
| Geology | 22 |
| Mining | 1 |
| Oil / petroleum | 3 |
| Technology | 3 |
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