分析了SMTP报文的组成和Exchange在传输邮件时的路由过程（包括 AQ, Routing Engine等组件）。-This paper specifies the anlysis of the combination of SMTP and the process of routing in the Exchange(including AQ,Routing Engine and so on).

AQ1052-2008 矿用二氧化碳传感器通用技术条件-AQ 1052-2008 Mine General conditions of carbon dioxide sensor