It is given and discussed the hierarchical structure of general distributed application system, and given its formal description.
首先给出并讨论了一般分布式应用系统的层次化结构，并给出了其形式化描述。
Paper gives a general description of the characteristics, preparation, application of the coal water slurry as well as its cost effectiveness in using as boiler fuel oil.
本文系统地综述了水煤浆的特性、制备方法、水煤浆的应用及其经济效益。
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