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切换 开关 : 39 phrases in 14 subjects |
Architecture | 3 |
Automobiles | 2 |
Aviation | 1 |
Electric machinery | 2 |
Electric traction | 1 |
Electronics | 9 |
Exhibitions | 1 |
Metallurgy | 2 |
Nuclear and fusion power | 3 |
Oil / petroleum | 1 |
Rail transport | 1 |
Space | 1 |
Technology | 11 |
Wind Energy | 1 |