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载 频 : 316 phrases in 26 subjects |
Agriculture | 1 |
Air defense | 33 |
Automobiles | 3 |
Aviation | 25 |
Communications | 1 |
Computer networks | 3 |
Construction | 3 |
Earth sciences | 1 |
Economy | 1 |
Electric machinery | 2 |
Electronics | 64 |
General | 8 |
Geophysics | 5 |
Information technology | 13 |
Metallurgy | 2 |
Oil / petroleum | 7 |
Piezoelectric crystals | 4 |
Project management | 1 |
Radio | 2 |
Rail transport | 1 |
Shipbuilding | 9 |
Space | 27 |
Technology | 76 |
Telecommunications | 22 |
Textile industry | 1 |
United Nations | 1 |