层次 结构 : 47 phrases in 17 subjects |
Artificial intelligence | 4 |
Aviation | 1 |
Business | 3 |
Computer networks | 3 |
Corporate governance | 2 |
Economy | 1 |
Electronics | 6 |
Information technology | 1 |
Management | 2 |
Mathematics | 1 |
Multimedia | 1 |
Oil / petroleum | 1 |
Project management | 4 |
Securities | 1 |
Space | 6 |
Technology | 6 |
Telecommunications | 4 |