 |
| |||
| earth-rotation period | |||
| the terrestrial rotation period | |||
|
период вращения Земли : 2 phrases in 2 subjects |
| Astronomy | 1 |
| Military | 1 |
|
| |||
| earth-rotation period | |||
| the terrestrial rotation period | |||
|
период вращения Земли : 2 phrases in 2 subjects |
| Astronomy | 1 |
| Military | 1 |