 |
| time between failures: 31 phrases in 13 subjects |
| Business | 1 |
| Communications | 2 |
| Computers | 2 |
| Electronics | 7 |
| General | 3 |
| Measuring instruments | 1 |
| Microelectronics | 3 |
| Optics branch of physics | 2 |
| Power system protection | 2 |
| Project management | 1 |
| Reliability | 2 |
| Statistics | 4 |
| Transport | 1 |