| |||
orbit modification | |||
orbital change | |||
orbit variation | |||
| |||
orbit modification |
изменение орбиты : 80 phrases in 9 subjects |
Apollo-Soyuz | 2 |
Astrometry | 1 |
Astronautics | 47 |
Astronomy | 1 |
Computers | 1 |
Makarov | 4 |
Mass media | 1 |
Nanotechnology | 6 |
Technology | 17 |