 |
| |||
| air layer | |||
| air space | |||
| layer of air; film of air; air film (e.g. between two surfaces) | |||
| tropospheric layer | |||
| Luftschicht: 22 phrases in 10 subjects |
| Building structures | 1 |
| Construction | 4 |
| Earth sciences | 1 |
| Life sciences | 1 |
| Microelectronics | 1 |
| Natural resourses and wildlife conservation | 2 |
| Nuclear physics | 6 |
| Optics branch of physics | 1 |
| Paragliding | 2 |
| Physics | 3 |