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| datum reference frame (напр., ЛА); reference axis system | |||
| base coordinate system | |||
| reference coordinate system (Eugene_Chel) | |||
| basic reference coordinate system | |||
| CRS (опорная, эталонная; Coordinates Reference System eugeene1979) | |||
| base coordinates | |||
| базовая система координат: 5 phrases in 3 subjects |
| Astronautics | 2 |
| Aviation | 2 |
| Military | 1 |