The input message has a single part, which must be an element.
输入消息占用单独的一部分，该部分必须是一个元素。
Interoperability will be the key word in Part 6, as services from several different implementations must be accessed from a single system.
第6部分重点讨论的将是互操作性，因为必须从单个系统访问来自几个不同实现的服务。
Interoperability is the key word in Part 6, as services from several different implementations must be accessed from a single system.
第6部分重点讨论互操作性，因为必须从单个系统访问来自几个不同实现的服务。
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