| |||
plane of reference; null plane | |||
reference plane; survey monument (MichaelBurov) | |||
| |||
datum plane; reference plane |
плоскость отсчёта: 15 phrases in 10 subjects |
Aerohydrodynamics | 2 |
Astronautics | 2 |
Aviation | 2 |
Drilling | 1 |
Makarov | 1 |
Military | 1 |
Nautical | 1 |
Navigation | 3 |
Oceanography & oceanology | 1 |
Oil and gas | 1 |