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调度室: 40 phrases in 12 subjects |
Architecture | 1 |
Automobiles | 1 |
Aviation | 3 |
Earth sciences | 1 |
Electronics | 3 |
Explosives and Explosive Ordnance Disposal | 2 |
Hydroelectric power stations | 4 |
Metallurgy | 1 |
Oil / petroleum | 2 |
Refrigeration | 6 |
Shipbuilding | 1 |
Technology | 15 |