The prerequisite of evaluating kinds of electricity generation technologies scientifically and fairly is to establish a unified conception, model and method of the generating cost accounting system.
科学与公平地评价各种电力生产方式的前提是建立统一的成本核算概念、模式和方法体系。
This paper introduces how to construct Yangtze River knowledge base based on conception design method, analyze and design conception model, architecture, system flow and system modules.
文章介绍了概念设计方法，分析与设计了长江知识库的概念模型、系统构架、系统流程和系统模块。
With the aim of optimal system design, the article discusses the model classification, the modeling method and the system design process on the basis of general conception of engineering model.
从工程模型的一般概念入手，以系统优化设计为目标，重点讨论了模型的分类、建模方法和系统的设计过程。
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