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| 无线电去干扰扼流线圈 | |||
| 消弧线圈 | |||
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suppression coil : 10 phrases in 6 subjects |
| Air defense | 1 |
| Electronics | 3 |
| Hydroelectric power stations | 2 |
| Power system protection | 1 |
| Rail transport | 2 |
| Technology | 1 |
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