Einschnürung : 28 phrases in 14 subjects |
Aerohydrodynamics | 2 |
Biology | 5 |
Chemistry | 1 |
Construction | 2 |
Geology | 6 |
Glass production | 1 |
Hydraulic engineering | 2 |
Hydrology | 1 |
Medical | 1 |
Optics branch of physics | 1 |
Quantum electronics | 2 |
Silicate industry | 1 |
Technology | 2 |
Water supply | 1 |