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消弧: 92 phrases in 15 subjects |
Air defense | 2 |
Automobiles | 1 |
Electric machinery | 8 |
Electrical engineering | 1 |
Electronics | 30 |
General | 3 |
Hydroelectric power stations | 6 |
Information technology | 1 |
Metallurgy | 5 |
Oil / petroleum | 2 |
Physics | 1 |
Rail transport | 5 |
Space | 3 |
Table tennis | 1 |
Technology | 23 |