业务: vocational work; professiona ...口: mouth功能: function业务端口功能: spf service port function窗口功能: function of window; window function接口功能: interface function用户口功能: upf user port function层次窗口功能: layered windows feature分层窗口功能: layered windows feature网络接口功能: network interface function用户端口功能: user port function闭口功能性记录: functional chew-in record分程序出口功能: function of block exit吻合口功能不全: anastomotic insufficiency应用软件接口功能: application interface function终端机接口功能: terminal interface functions终端接口功能块: tib terminal interface block业务功能: ipsf iservice function ip用户功能（业务）: user facility (service)补充业务功能: supplementary service function业务管理功能: service management function smf业务交换功能: ssf service switching function业务控制功能: service control function scf业务数据功能: service data function sdf业务资源功能: service resource function
