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| 51. | square butt weld |
| 无坡口对接焊 |
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| 52. | single buttstrap |
| 单对接搭板 |
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| 53. | double flanged bott joint |
| 双折边对接 |
|
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| 54. | angle butt weld |
| 斜口对接焊缝 |
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| 55. | angle butt welding |
| 斜口对接焊 |
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| | |
| 56. | Apollo docking test device |
| 阿波罗飞船对接试验装置 |
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| 57. | cornerlock joint |
| 直钉榫对接 |
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| 58. | resonance butt weld |
| 谐振式对接焊 |
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| 59. | double u butt groove weld |
| 双u形对接焊 |
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| 60. | open square butt joint |
| 平头开口对接焊 |
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