Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/bbda0c73211ff21b128fb605163ae661.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 ecomomics例句_ecomomics英汉例句_ecomomics双解例句_沉淀汉英词典
This paper analyzes the protection of the optimal patent length from the angle of ecomomics with the help of the length benefit curve and the Nordhaus basic model. 摘要文章从经济学角度出发，通过期限收益曲线模型和诺德豪斯的基本模型，对专利最优保护期限进行了分析；