репер: 144 phrases in 15 subjects |
Astronautics | 2 |
Aviation | 4 |
Construction | 15 |
General | 2 |
Geology | 5 |
Hydraulic engineering | 20 |
Mathematics | 45 |
Mechanic engineering | 1 |
Metallurgy | 3 |
Military | 19 |
Mining | 4 |
Oil and gas technology | 7 |
Radio | 2 |
Surveying | 1 |
Technology | 14 |