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| 焊接材料 | |||
| 堆焊材料 | |||
| 焊接填充材料 | |||
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| 焊接材料; 焊缝金属 | |||
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welding material : 5 phrases in 3 subjects |
| Aviation | 1 |
| Plastics | 3 |
| Steel production | 1 |
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