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破 片 : 108 phrases in 22 subjects |
Agriculture | 2 |
Air defense | 1 |
Architecture | 3 |
Aviation | 8 |
Compressors | 2 |
Construction | 1 |
Desert science | 1 |
Drilling | 1 |
Earth sciences | 1 |
Economy | 1 |
Electronics | 1 |
Explosives and Explosive Ordnance Disposal | 5 |
General | 3 |
Hydroelectric power stations | 1 |
Metallurgy | 3 |
Mining | 1 |
Nautical | 1 |
Oil / petroleum | 7 |
Refrigeration | 1 |
Space | 46 |
Technology | 16 |
United Nations | 2 |