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| 41. | square butt weld |
| 无坡口对接焊 |
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| 42. | cornerlock joint |
| 直钉榫对接 |
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| 43. | flash butt-welded anchor chain cable |
| 闪光对接焊锚链 |
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| 44. | fast joint butt |
| 固杆铰链 |
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| 45. | double u butt groove weld |
| 双u形对接焊 |
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| 46. | Butt joint |
| 对接合;对接榫 |
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| 47. | double-bevel butt weld K |
| 形坡口对接焊缝 |
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| 48. | Union for butt joints--Assembly |
| GB/T3756.1-1983卡套式对接直通管接头 |
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| 49. | double-bevel butt weld |
| K形坡口对接焊缝 |
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| 50. | loose joint butt |
| 可拆铰链 |
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