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通风井 : 68 phrases in 14 subjects |
Architecture | 2 |
Earth sciences | 1 |
Economy | 1 |
Electric machinery | 2 |
Electronics | 4 |
Engineering geology | 2 |
Explosives and Explosive Ordnance Disposal | 1 |
General | 2 |
Hydroelectric power stations | 3 |
Metallurgy | 1 |
Refrigeration | 2 |
Space | 1 |
Technology | 45 |
Wind Energy | 1 |