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)(jī)端