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| Knotenvermittlungsstelle f | |||
| Hauptumschalter m | |||
| Hauptschalter m (panel); Hauptschaltertafel f (panel) | |||
| Haupttrennschalter m | |||
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main switching : 17 phrases in 7 subjects |
| Computers | 1 |
| Electronics | 4 |
| Mechanic engineering | 1 |
| Microsoft | 1 |
| Optics branch of physics | 1 |
| Technology | 4 |
| Transport | 5 |