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| 51. | fiber optic butting connector |
| 光纤对接连接器 |
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| 52. | butt fusion welding |
| 对接熔焊 |
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| 53. | butt riveted joint |
| 铆钉对接 |
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| 54. | butt seam welding |
| 对接滚焊 |
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| 55. | butt-welded side seam |
| 对接接缝 |
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| 56. | butt resistance welding |
| 对接电阻焊 |
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| 57. | butt drying-plate |
| 对接式烘板 |
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| 58. | butt seam welder |
| 对接滚焊机 |
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| 59. | butt joint with double straps |
| 双夹板对接 |
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| 60. | docking adapter |
| 对接接合器 |
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