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| 焊接机 | |||
| 焊接装置; 焊接机 | |||
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welding unit : 9 phrases in 6 subjects |
| Aviation | 1 |
| Chemistry | 2 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Plastics | 2 |
| Technology | 1 |
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