This paper analyses the users need, put forwords the idea of demand model and diss-cussed the method of modelling by means of fuzzy set theory.是什么意思_This paper analyses the users need, put forwords the idea of demand model and diss-cussed the method of modelling by means of fuzzy set theory.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句