此体系结构为客户端和服务实现提供了选择不同于网关之间使用的外部协议的内部协议的灵活性。
This architecture offers client and service implementers the flexibility of choosing internal protocols that are different from the external protocol used between the gateways.
建立在NMR层之上的组件添加了外部协议。
Components that are layered on the NMR add external protocols.
这些外部协议中的某些，比如jms，非常适合于以一种比组件自身所支持的要可靠得多的方式来连接组件。
Some of these external protocols, like JMS, are useful in connecting components in a more reliable fashion than the components support themselves.
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