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| signalkredsløb; styrekredsløb; styreledning | |||
| kontrolkredsløb; manøvrestrømkreds; styrekreds; styrestrømkreds | |||
| control circuit: 51 phrases in 7 subjects |
| Communications | 8 |
| Earth sciences | 2 |
| Electronics | 4 |
| Information technology | 33 |
| Mechanic engineering | 1 |
| Technology | 1 |
| Transport | 2 |