While adopting the layered structure and the thought that control is independent of bearer, providing uniform and open service interface, NGN can produce rich and colorful services rapidly.是什么意思_While adopting the layered structure and the thought that control is independent of bearer, providing uniform and open service interface, NGN can produce rich and colorful services rapidly.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句