It is of medium length , neither cobby nor slack from excessive length 中等长度，既不矮胖、不松弛也不过长。
2.
Abstract : in this paper , the status quo factor characters of rural industry increase are analysed , and cobby - douglas functions are established . factors involved are further analysed . finally , suatainable development countermeasures are put forword 文摘:首先分析了山东省农村工业增长的要素投入特点，用道格拉斯函数对山东省农村工业增长因素作了动态分析，提出了山东农村工业持续发展的对策。
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