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| 61. | capillary crack |
| 毛细裂缝 |
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| 62. | potential crack |
| 潜在裂纹 |
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| 63. | endurance crack |
| 疲劳裂纹 |
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| 64. | Crack a safe. |
| 打开保险箱 |
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| 65. | concussion crack |
| 撞击裂缝 |
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| 66. | circumferential crack |
| 周边裂隙 |
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| 67. | underbead crack |
| 焊根裂缝|焊道下裂缝 |
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| 68. | crack up a plane;crack up a boat. |
| 撞毁了一架飞机；撞沉了一条船 |
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| 69. | restriction crack |
| 拉裂 |
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| 70. | crack a whip |
| 抽鞭子(使发出响声) |
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