The definitions of syntax structure, semantic interpretation, knowledge base form and reasoning problems based on satisfiability are given for the extended fuzzy description logic.

定义了扩展模糊描述逻辑的语法结构、语义解释、知识库形式以及基于可满足性的推理问题。

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The reasoning mechanism of PTES can deal with both uncertain facts and uncertain rules in a formal way by employing possibilistic logic and fuzzy set theory as its logical basis.

PTES的推理机制使用了可能性逻辑及模糊集合理论作为其逻辑基础，并以一种形式化的方法提供了处理非确定事实及非确定规则的能力。

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Fuzzy control is a kind of computer digital control technique, which is based on the fuzzy sets, fuzzy language variable and fuzzy logic reasoning.

模糊控制是以模糊集合、模糊语言变量和模糊逻辑推理为基础的计算机数字控制技术。

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