 |
| multiple-layer: 21 phrases in 13 subjects |
| Aviation | 1 |
| Chromatography | 1 |
| Construction | 1 |
| Genetics | 1 |
| Geophysics | 3 |
| Household appliances | 1 |
| Medical appliances | 1 |
| Microelectronics | 1 |
| Military | 2 |
| Nanotechnology | 1 |
| Technology | 5 |
| Telecommunications | 2 |
| Thermal engineering | 1 |