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致 : 74 phrases in 13 subjects |
| Automatic control | 1 |
| Electronics | 1 |
| Environment | 8 |
| General | 23 |
| Isolation | 1 |
| Mathematics | 24 |
| Nuclear physics | 3 |
| Patents | 3 |
| Physics | 1 |
| Piezoelectric crystals | 1 |
| Statistics | 6 |
| Superconductivity | 1 |
| Thermal Energy | 1 |
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