Mot-clefs : 即時(shí)(shí)通訊____，企業(yè)(yè)(yè)(yè)(yè)(yè)溝通______，龍笛即時(shí)(shí)通________，視頻會(huì)議______________，集成開(kāi)發(fā)(fā)(fā)(fā)(fā)(fā)______________，手機(jī)(jī)(jī)端