| |||
| 数字分级体系; 数字等级体系 | |||
|
digital hierarchy : 30 phrases in 10 subjects |
| Agriculture | 1 |
| Aviation | 1 |
| Communications | 1 |
| Electronics | 6 |
| Geophysics | 1 |
| Information technology | 5 |
| Multimedia | 1 |
| Space | 1 |
| Technology | 6 |
| Telecommunications | 7 |
| |||
| 数字分级体系; 数字等级体系 | |||
|
digital hierarchy : 30 phrases in 10 subjects |
| Agriculture | 1 |
| Aviation | 1 |
| Communications | 1 |
| Electronics | 6 |
| Geophysics | 1 |
| Information technology | 5 |
| Multimedia | 1 |
| Space | 1 |
| Technology | 6 |
| Telecommunications | 7 |