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靶场时间 |
range time : 42 phrases in 12 subjects |
Air defense | 1 |
Aviation | 4 |
Electronics | 7 |
Explosives and Explosive Ordnance Disposal | 3 |
Geophysics | 1 |
Metallurgy | 1 |
Multimedia | 1 |
Nuclear physics | 1 |
Oil / petroleum | 2 |
Power system protection | 1 |
Space | 7 |
Technology | 13 |