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| pilot wires (в РЗ) | |||
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| main boosting | |||
| boosting main | |||
| subcatenary (двойной подвески) | |||
| вспомогательные провода: 22 phrases in 7 subjects |
| Automobiles | 3 |
| British usage, not spelling | 1 |
| Electrical engineering | 3 |
| Electronics | 4 |
| Energy industry | 1 |
| Makarov | 1 |
| Technology | 9 |