manual telephone system
短語詞組
- manual l telephone system 人工電話系統(tǒng)
- manual mobile telephone system [通信]移動式人工電話系統(tǒng)
- manual telephone switching system 人工電話交換機
- manual telephone exchanging system 人工電話交換制
- manual telephone exchange system 人工電話交換制
- telephone system manual 人工電話系統(tǒng) 返回 manual telephone system