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| 41. | attachment bolt |
| 联接螺栓;连接螺栓 |
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| 42. | positioning bolt |
| 定位螺栓 |
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| 43. | Settlement bolt |
| 沉陷钉 |
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| 44. | espagnolette bolt |
| 法国式窗插销|长插销 |
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| 45. | unfinished bolt |
| 毛螺栓 |
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| 46. | bolt tightening |
| 螺栓固紧 |
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| 47. | tightening bolt |
| 拉紧螺栓，(铁)风口拉杆 |
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| 48. | length bolt |
| 定距拉杆 |
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| 49. | Rifleman's Bolt |
| 利福民号铜钉 |
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| 50. | espagnollet bolt |
| 长插销 |
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