 |
| |||
| switched telephone network | |||
| 交换电话网络: 7 phrases in 3 subjects |
| Aviation | 1 |
| Electronics | 3 |
| Information technology | 3 |
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