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| 焊缝表面 | |||
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weld face : 14 phrases in 9 subjects |
| Business | 1 |
| Chemistry | 2 |
| Drilling | 1 |
| Metallurgy | 1 |
| Nuclear and fusion power | 1 |
| Oil / petroleum | 3 |
| Plastics | 2 |
| Technology | 2 |
| Wind Energy | 1 |
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