Mot-clefs : 即時(shí)通訊___________________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通_________________，龍笛即時(shí)通____________________，視頻會(huì)議__________________，集成開(kāi)發(fā)(fā)(fā)(fā)(fā)(fā)(fā)________________，手機(jī)(jī)端