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| 41. | US Minerals Management Service |
| 美国矿产管理局 |
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| 42. | hall of metals and minerals |
| 五金矿产馆 |
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| 43. | General Petroleum and Mineral Organizatio |
| 石油矿产组织 |
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| 44. | tectonic burial metamorphism |
| 构造埋藏变质作用 |
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| 45. | NMDC (National Mineral Development Corporation) |
| 国营矿产开发公司 |
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| 46. | Bureau of mineral development supervision |
| 矿产开发管理局 |
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| 47. | MMAB (Minerals and Metals Advisory Board) |
| 矿产和咨询委员会 |
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| 48. | solid combustible minera |
| 固体可燃矿产 |
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| 49. | industrial requirements of ores |
| 矿产工业指标 |
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| 50. | depth of burial |
| 埋藏深度;埋深 |
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