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| 61. | minerogenic rock |
| 成矿岩石 |
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| 62. | incompetent rock |
| 弱岩石 |
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| 63. | dynamic rock mechanics |
| 岩石动力学 |
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| 64. | petrographic classification |
| 岩石分类 |
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| 65. | formation hardness |
| 岩石硬度 |
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| 66. | permeability of rocks |
| 岩石渗透性 |
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| 67. | rock fragmentation |
| 岩石破碎 |
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| 68. | gas permeability of rocks |
| 岩石透气性 |
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| 69. | a lump of rock |
| 一块岩石 |
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| 70. | petrologic analysis |
| 岩石分析 |
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