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31. | adapter assembly |
| 接头组件 |
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32. | lead seal adapter |
| 铅封接头 |
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33. | priming adapter |
| 起爆接头 |
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34. | blast connection |
| 风管接头 |
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35. | flange joint |
| 凸缘接头 |
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36. | insulating joint |
| 绝缘接头 |
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37. | junctional fold |
| 接头褶 |
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38. | adjustable fitting |
| 铰接接头 |
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39. | knock-off joint |
| 杆接头 |
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40. | block connection |
| 滑车接头 |
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