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under voltage relay | |||
low-voltage relay | |||
undervoltage relay | |||
under-voltage relay |
低 电压继电器 : 18 phrases in 8 subjects |
Air defense | 1 |
Electric machinery | 2 |
Electronics | 1 |
General | 1 |
Geophysics | 1 |
Hydroelectric power stations | 3 |
Rail transport | 1 |
Technology | 8 |