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| 环形焊缝 | |||
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| 环焊缝 | |||
| 环形焊缝 | |||
| 环向焊缝; 圆周焊缝 | |||
| 环缝 | |||
| 环焊缝 (整周焊缝); 圆周焊接; 环缝焊接 | |||
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circumferential welds : 2 phrases in 2 subjects |
| Electric machinery | 1 |
| Space | 1 |
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