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| размыкать цепь; разрывать цепь питания (When the burned-out lamp is replaced, the series relay energizes and opens the circuit to the secondary filament. BorisKap) | |||
| open a circuit: 9 phrases in 4 subjects |
| Automated equipment | 1 |
| Electronics | 1 |
| Makarov | 5 |
| Technology | 2 |