求翻译：本文首先对邮件推送系统的现状背景进行了简单介绍，在分析了3G网络和技术的基础上，组建了适合于煤矿企业的专网，并对井下井上的组网方案进行了设计，所选的设备在实际中已有应用，切实可行。是什么意思？

A brief introduction to the first push mail system status background, on the basis of analysis of the 3g network and technology, set up a private network suitable for a coal mining enterprise, and underground Inoue networking solutions for the design, selected the device has been applied in practice

This article is first to push email system for the background of the status quo, simple introduction to analysis of the 3G network and on a technical basis, the Group was built for the coal mining business, and the pound down to the pits on the program website has been designed, and the selected dev

This article first has carried on the simple introduction to the mail push system present situation background, in has analyzed the 3G network and in the technical foundation, set up has suited in the coal mine enterprise's special network, and went into a well on network plan to the well to carry o

First of all, this article on the background of push email system are described in a simple, on the basis of the analysis in the 3G network and technology, formed a suitable special network of coal mine enterprise and on the underground network on the design, applications already on the selected dev

正在翻译，请等待...