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磁 变化 : 62 phrases in 9 subjects |
| Chemistry | 1 |
| Electric machinery | 4 |
| Electronics | 5 |
| General | 1 |
| Metallurgy | 8 |
| Oil / petroleum | 9 |
| Shipbuilding | 1 |
| Space | 4 |
| Technology | 29 |
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