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继电器序列 |
relay sequence : 34 phrases in 11 subjects |
Agriculture | 1 |
Automobiles | 1 |
Electric machinery | 3 |
Electricity | 2 |
Electronics | 12 |
Hydroelectric power stations | 2 |
Information technology | 1 |
Power electronics | 1 |
Shipbuilding | 1 |
Space | 1 |
Technology | 9 |