 |
| |||
| shifted spectrum | |||
| 移位 谱: 26 phrases in 8 subjects |
| Aviation | 1 |
| Earth sciences | 1 |
| Geology | 1 |
| Metallurgy | 3 |
| Oil / petroleum | 4 |
| Space | 3 |
| Technology | 12 |
| Wind Energy | 1 |
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