telephone conference system
短語(yǔ)詞組
- telephone conference system tcs 電話會(huì)議系統(tǒng)
- Telephone conference bridge system 發(fā)明名稱
- telephone conference tandem system 電話會(huì)議匯接系統(tǒng)
- conference telephone system 會(huì)議電話系統(tǒng);會(huì)議電話
- conference telephone switch system 會(huì)議電話匯接機(jī)
- conference e telephone switch system 會(huì)議
- telephone conference of semi -distribution system 半分配制會(huì)議電話 返回 telephone conference system