信息处理系统（MHS）位于开放系统互连（OSI）基本参考模型的最高层。
Message Handling System(MHS) is in the highest lay-er of the Basic Reference Model of OSI.
在开放系统互连(osi)参考模型的通信，媒体访问管理执行的媒体访问控制(mac)子层的链路层的。
In the Open Systems Interconnection (OSI) communication reference model, media access management is performed by the media access Control (MAC) sublayer of the Data-Link layer.
在OSI(开放系统互连)是一个标准的描述或“参考模型”如何讯息应转交之间的任何两点在一个通信网络。
OSI (Open Systems Interconnection) is a standard description or "reference model" for how messages should be transmitted between any two points in a telecommunication network.
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