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| 41. | Impact Test |
| 撞击试验 |
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| 42. | chain collision |
| 连环撞击 |
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| 43. | percussion figure |
| 撞击图像 |
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| 44. | percussive tool |
| 撞击工具 |
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| 45. | percussion primer |
| 撞击底火 |
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| 46. | husking by impact |
| 撞击脱壳 |
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| 47. | percussive boring |
| 撞击钻探 |
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| 48. | percussive device |
| 撞击装置 |
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| 49. | sampling by impaction |
| 撞击取样 |
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| 50. | liquid knockout |
| 液体撞击 |
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