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发 光 器件 : 26 phrases in 9 subjects |
| Aviation | 1 |
| Electronics | 14 |
| General | 2 |
| Polymers | 4 |
| Refrigeration | 1 |
| Semiconductors | 1 |
| Space | 1 |
| Technology | 1 |
| Telecommunications | 1 |
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