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反射波 |
reflection wave : 29 phrases in 11 subjects |
Air defense | 2 |
Aviation | 1 |
Electronics | 1 |
Explosives and Explosive Ordnance Disposal | 1 |
Geophysics | 1 |
Hydroelectric power stations | 1 |
Metallurgy | 1 |
Rail transport | 1 |
Shipbuilding | 1 |
Space | 3 |
Technology | 16 |