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| 31. | priming adapter |
| 起爆接头 |
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| 32. | emergency connector |
| 应急接头 |
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| 33. | half-and-half joint |
| 对拼接头 |
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| 34. | junctional fold |
| 接头褶 |
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| 35. | coaxial fitting |
| 同轴电缆接头 |
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| 36. | lead seal adapter |
| 铅封接头 |
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| 37. | air tight joint |
| 气密接头 |
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| 38. | flange joint |
| 凸缘接头 |
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| 39. | slim hole joint |
| 小眼接头 |
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| 40. | knock-off joint |
| 杆接头 |
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