 |
| |||
| private automatic branch exchange; business exchange; business telephone exchange; business telephone system; office exchange; private branch exchange | |||
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abonnentvaxel : 29 短语, 2 学科 |
| 电话 | 1 |
| 通讯 | 28 |
|
| |||
| private automatic branch exchange; business exchange; business telephone exchange; business telephone system; office exchange; private branch exchange | |||
|
abonnentvaxel : 29 短语, 2 学科 |
| 电话 | 1 |
| 通讯 | 28 |