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知识库是专家决策系统的核心组成之一．本文用规则表示法产生规则建立小流域综合治理决策专家系统知识库，其过程包括知识获取、知识整理、知识形式化与形成知识库几个方面．
Knowledge base is one of the core components of expert decision-making system. In this paper, we use rules notation to generate rules to establish a knowledge base of decision-making expert system for comprehensive management of small watershed. The process includes knowledge acquisition, knowledge consolidation, knowledge formalization and knowledge repository formation.