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| 61. | A coarse grain. |
| 粗糙的微粒 |
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| 62. | a crude drawing; |
| 粗糙的画; |
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| 63. | extremely rough mutant |
| 极度粗糙突变型 |
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| 64. | It has a rough surface. |
| 它表面粗糙。 |
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| 65. | asperity contact |
| 粗糙面接触 |
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| 66. | rough hardfacing |
| 粗糙硬化表面 |
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| 67. | rough angular quarrystone |
| 粗糙棱角矿石 |
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| 68. | hydraulically rough |
| 水力粗糙的 |
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| 69. | rough-walled fracture |
| 粗糙壁裂缝 |
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| 70. | coarsely manufacture |
| 制造得粗糙 |
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