A LAN (Local Area Network)based on PBX (Private Branch Exchange) is easy to connect with other networks and its investment can be reduced.是什么意思_A LAN (Local Area Network)based on PBX (Private Branch Exchange) is easy to connect with other networks and its investment can be reduced.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句