 |
| |||
| 备用话机; 分机 | |||
| 电话分机 | |||
| extension telephone: 6 phrases in 4 subjects |
| Communications | 3 |
| Rail transport | 1 |
| Technology | 1 |
| Telecommunications | 1 |
|
| |||
| 备用话机; 分机 | |||
| 电话分机 | |||
| extension telephone: 6 phrases in 4 subjects |
| Communications | 3 |
| Rail transport | 1 |
| Technology | 1 |
| Telecommunications | 1 |