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变换装 置 : 57 phrases in 17 subjects |
Air defense | 1 |
Astronautics | 1 |
Automobiles | 3 |
Aviation | 4 |
Earth sciences | 1 |
Electric machinery | 2 |
Electronics | 5 |
General | 6 |
Metallurgy | 2 |
Oil / petroleum | 1 |
Oil processing plants | 1 |
Rail transport | 1 |
Space | 7 |
Technology | 16 |
Telecommunications | 3 |
Textile industry | 2 |
Wind Energy | 1 |