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电表管 : 38 phrases in 12 subjects |
| Air defense | 1 |
| Automobiles | 1 |
| Aviation | 6 |
| Construction | 1 |
| Electric machinery | 1 |
| Electronics | 4 |
| General | 1 |
| Geophysics | 1 |
| Metallurgy | 4 |
| Space | 1 |
| Technology | 16 |
| Telecommunications | 1 |
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