通信世界 meaning in Chinese

a communications world

The outmost layer ( c - layer - communication layer ) deals with i / o issues between the ums and outside communication world ; the inner most layer ( k - layer , kernel layer ) involves internal management and message storage ; while the middle layer ( a - layer - auxiliary layer ) plays the go - between function between layers c and k . as the core component in layer k , the ums mail server is responsible for the storage , transmission and management of the system driven by the layer - k state machine
文中设计的zhx - ums是一个三层系统，最外层( c层?通信层)处理ums和外部通信世界的i o问题；最内层( k层?核心层)负责内部的消息管理和消息存储；中间层( a层?辅助层)处理c层与k层之间的通信及消息格式转换。 ums邮件服务器是系统三层体系结构中k层的核心模块，在k层协议机驱动下完成存储、转发及管理等任务。