|
pulse frequency : 43 phrases in 14 subjects |
| Astronomy | 1 |
| Automated equipment | 2 |
| Communications | 10 |
| Computers | 1 |
| Earth sciences | 1 |
| Electronics | 7 |
| Information technology | 2 |
| Medical appliances | 2 |
| Nuclear physics | 1 |
| Power electronics | 1 |
| Radiation | 8 |
| Remote sensing | 1 |
| Technology | 4 |
| Telecommunications | 2 |