|
recurrence : 56 phrases in 19 subjects |
| Astronomy | 3 |
| Automated equipment | 2 |
| Communications | 7 |
| Earth sciences | 1 |
| Electronics | 3 |
| General | 1 |
| Health care | 4 |
| High energy physics | 2 |
| Information technology | 1 |
| Law | 1 |
| Life sciences | 4 |
| Mathematics | 3 |
| Radiation | 7 |
| Remote sensing | 1 |
| Scientific | 2 |
| Social science | 3 |
| Statistics | 2 |
| Technology | 8 |
| Transport | 1 |