 |
| |||
| 长途交换 | |||
| |||
| 长途交换机 | |||
|
toll switching : 32 phrases in 5 subjects |
| Electronics | 14 |
| Exhibitions | 1 |
| Information technology | 1 |
| Technology | 4 |
| Telecommunications | 12 |
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