消息中间件为分布式系统中创建、发送、接收消息提供了一套可靠、通用的方法，它屏蔽了不同操作系统和网络协议的具体细节，减少了开发跨平台和网络协议软件的复杂性。
Message-oriented middleware provides a common way to create, send and receive message in distributed systems, it reduces the complexity in developing the cross platform and network protocol software.
本文叙述一个支持分布式办公信息系统的网络操作系统的设计原则、实现方案和使用方法。
The design idea and implementation of a network operating system (NOP) are described, which is a supporting system for DOIS.
因此，网络与分布式系统之间的区别在于软件(特别是操作系统)，而不是硬件。
Thus, the distinction between a network and a distributed system lies with the software (especially the operating system), rather than with the hardware.
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