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单相交流 : 30 phrases in 9 subjects |
| Electric machinery | 5 |
| Electronics | 2 |
| Hydroelectric power stations | 1 |
| Mathematics | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Rail transport | 11 |
| Shipbuilding | 4 |
| Technology | 4 |
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