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injection |
注频 : 21 phrases in 12 subjects |
Air defense | 1 |
Aviation | 1 |
Economy | 2 |
Electronics | 3 |
Explosives and Explosive Ordnance Disposal | 1 |
Information technology | 1 |
Metallurgy | 1 |
Multimedia | 1 |
Project management | 1 |
Space | 1 |
Technology | 5 |
Telecommunications | 3 |