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脉波 | |||
脉冲波 |
pulse wave : 32 phrases in 12 subjects |
Air defense | 1 |
Aviation | 1 |
Electric machinery | 1 |
Electricity generation | 1 |
Electronics | 5 |
Explosives and Explosive Ordnance Disposal | 3 |
General | 1 |
Nursing | 2 |
Shipbuilding | 1 |
Space | 2 |
Sports | 1 |
Technology | 13 |