demonstrative是什么意思

例句：

1、A Demonstrative Analysis of the Development of the Scale of City

城市规模发展的实证分析

2、 Analysis on the Demonstrative Models of the New System Economics

新制度经济学范式分析

3、Demonstrative Study on the Factors in Students' Mathematics Learning Efficiency

关于高中生数学学习效率影响因素的`实证研究

4、Both theoretical and demonstrative method is used in this thesis.

本文综合利用理论和实证相结合的研究方法。