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凸件 : 44 phrases in 11 subjects |
| Architecture | 1 |
| Automobiles | 8 |
| Aviation | 1 |
| Compressors | 2 |
| Electronics | 4 |
| General | 3 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Plastics | 2 |
| Steel production | 4 |
| Technology | 16 |
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