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| 31. | wear prevention |
| 防止磨损 |
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| 32. | abrading section |
| 磨损部位 |
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| 33. | abrasion hardness |
| 磨损硬度 |
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| 34. | chafing fatigue |
| 磨损疲劳 |
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| 35. | abrasion mechanism |
| 磨损机理 |
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| 36. | wear of vehicle part |
| 汽车零件磨损 |
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| 37. | abrasion of coin |
| 铸币磨损 |
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| 38. | examine for wear and tear |
| 磨损检验 |
|
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| 39. | running-in wear |
| 初始磨损 |
|
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| 40. | outside deterioratio |
| 外部磨损 |
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