|
Control : 171 phrases in 21 subjects |
| Abbreviation | 68 |
| Aeronautics | 2 |
| Aviation | 32 |
| Communications | 1 |
| Computer networks | 4 |
| Computers | 5 |
| Databases | 1 |
| Earth sciences | 1 |
| Electronics | 2 |
| Information technology | 11 |
| International trade | 1 |
| Mass media | 1 |
| Military | 17 |
| NASA | 3 |
| Nuclear and fusion power | 1 |
| Physiology | 2 |
| Programming | 2 |
| Radio | 1 |
| Telecommunications | 8 |
| Transport | 6 |
| United States | 2 |