| |||
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 |