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| 零电路 | |||
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zero circuit : 16 phrases in 10 subjects |
| Construction | 1 |
| Electronics | 2 |
| General | 1 |
| Hydroelectric power stations | 2 |
| Information technology | 2 |
| Oil / petroleum | 1 |
| Rail transport | 1 |
| Shipbuilding | 1 |
| Technology | 4 |
| Telecommunications | 1 |
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