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| 主回路; 基本轮廓; 外回路 | |||
| 基本电路 | |||
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основной контур : 28 phrases in 6 subjects |
| Aviation | 1 |
| Electronics | 2 |
| Energy industry | 1 |
| General | 8 |
| Jet engines | 2 |
| Technology | 14 |
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