Palavra chave: 即時(shí)(shí)通訊_____________________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通________________，龍笛即時(shí)(shí)通_______________，視頻會(huì)議_____________________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)________________，手機(jī)(jī)端