| |||
aggregate |
集 , 总 数 : 40 phrases in 12 subjects |
Air defense | 2 |
Architecture | 1 |
Aviation | 5 |
Construction | 1 |
Earth sciences | 1 |
Electronics | 6 |
Engineering geology | 2 |
Geophysics | 1 |
Information technology | 2 |
Space | 7 |
Technology | 11 |
Telecommunications | 1 |