短語詞組短語BC Bearer Circuit 承載電路direct bearer circuit 直達(dá)承載電路radio bearer circuit 無線電承載電路voice frequency telegraph bearer circuit 音頻電報(bào)承載電路Bearer -independent circuit-switched core network 獨(dú)立承載電路交換核心網(wǎng)絡(luò)circuit mode bearer service 電路方式承載業(yè)務(wù)circuit -bearer interface board 電路承載通道接口板 返回 bearer circuit