 |
| |||
| 密度模型 | |||
|
density model : 16 phrases in 6 subjects |
| Astronomy | 1 |
| Aviation | 3 |
| Geophysics | 2 |
| Nuclear physics | 1 |
| Space | 3 |
| Technology | 6 |
|
| |||
| 密度模型 | |||
|
density model : 16 phrases in 6 subjects |
| Astronomy | 1 |
| Aviation | 3 |
| Geophysics | 2 |
| Nuclear physics | 1 |
| Space | 3 |
| Technology | 6 |