| |||
base surface (ssn) | |||
main plane | |||
primary surface; prime surface |
основная поверхность: 15 phrases in 9 subjects |
Aerohydrodynamics | 3 |
Aviation | 1 |
Construction | 1 |
Forestry | 3 |
Geophysics | 1 |
Makarov | 3 |
Mechanic engineering | 1 |
Technology | 1 |
Thermal engineering | 1 |