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| схема соединения треугольником | |||
| схема соединения угольником | |||
| треугольник | |||
| схема треугольника; схема соединения "треугольником" | |||
| delta circuit: 7 phrases in 4 subjects |
| Electrical engineering | 2 |
| Electronics | 1 |
| Technology | 2 |
| Telecommunications | 2 |
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