 |
| |||
| structure to propellant mass ratio (发动机质量与推进剂质量之比) | |||
| 结构质量比: 3 phrases in 2 subjects |
| Automobiles | 1 |
| Space | 2 |
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error
| Get short URL | Language Selection Tips