 |
| |||
| sound shadow region | |||
| acoustic shadow; acoustical shadow; sound shadow; sound shadow zone | |||
| 声影区: 4 phrases in 3 subjects |
| Aviation | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Technology | 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