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