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| controlo por comutação | |||
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switching control : 28 phrases in 10 subjects |
| Communications | 2 |
| Electrical engineering | 3 |
| Electricity generation | 1 |
| Electronics | 12 |
| Industry | 2 |
| Information technology | 3 |
| Magnetics | 1 |
| Mechanic engineering | 2 |
| Power lines | 1 |
| Transport | 1 |