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投 射 线: 28 phrases in 12 subjects |
Agriculture | 1 |
Architecture | 2 |
Artificial intelligence | 2 |
Aviation | 2 |
Electronics | 6 |
General | 2 |
Geology | 1 |
Geophysics | 1 |
Metallurgy | 3 |
Space | 1 |
Technology | 6 |
Telecommunications | 1 |