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| 51. | creation of new knowledge |
| 新知识的开拓 |
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| 52. | Cultural Expansion Company |
| 文化开拓公司 |
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| 53. | opening up by blindshaft |
| 暗井开拓 |
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| 54. | surface development of deposit |
| 矿床露天开拓 |
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| 55. | exploit the urBan and rural markets |
| 开拓城乡市场 |
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| 56. | indirect analytic continuation |
| 间接解析开拓 |
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| 57. | developed coal reserves |
| 开拓煤量 |
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| 58. | minimal closed extension |
| 最小闭开拓 |
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| 59. | panel development |
| 盘区开拓 |
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| 60. | developed ore reserves |
| 开拓矿量 |
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