|
surface active : 15 phrases in 10 subjects |
| Agriculture | 1 |
| Chemistry | 1 |
| Construction | 1 |
| Geophysics | 1 |
| Mechanic engineering | 3 |
| Metallurgy | 2 |
| Natural resourses and wildlife conservation | 1 |
| Nuclear physics | 2 |
| Radio | 1 |
| Technology | 2 |
|
surface active : 15 phrases in 10 subjects |
| Agriculture | 1 |
| Chemistry | 1 |
| Construction | 1 |
| Geophysics | 1 |
| Mechanic engineering | 3 |
| Metallurgy | 2 |
| Natural resourses and wildlife conservation | 1 |
| Nuclear physics | 2 |
| Radio | 1 |
| Technology | 2 |