探讨这些核心功能的开发途径和方法，并通过引例对比，说明所开发系统可实现的优化水平。
This paper discusses the way and method to develop these core functions and explains (by comparing with example) the optimization level that the system can realize.
并通过实例分析和结构对比，说明了不同场合应该选用什么样的结构。
Then through the example analysis and the structure comparison to explain what kind of structure can be chosen in different situations.
文中还通过手工和微机计算的对比，说明程序使用过程。
Also the calculating process is demonstrated by comparison of the manual and computer computing.
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