 |
| |||
| 交换区 | |||
| 调换面积 | |||
| 电话交换区 | |||
| 交换面积; 换算面积 | |||
| 电话交换区 | |||
| 电话交换区①一个交换局的业务区 GB ②多个交换局,但属于统一资费的业务区 US | |||
|
exchange area : 28 phrases in 10 subjects |
| Athletics | 2 |
| Chemistry | 1 |
| China | 2 |
| Electronics | 5 |
| Finances | 1 |
| Information technology | 1 |
| Oil / petroleum | 1 |
| Project management | 1 |
| Technology | 9 |
| Telecommunications | 5 |