近年来，有关产业链研究显著升温，但学术界对产业链定义及形成动因还没有形成一致认识。
In recent years, researching on the industry chain is significantly warming, but the academic has not yet reached consensus understanding on the definition and integration of the industry chain.
其次，对林业产业链的测度模型和方法进行研究。
Secondly, this dissertation studies the evaluation model and methods of forestry industrial chain.
本文主要研究基于循环经济理论我国电子废弃物回收产业链的再造问题。
This thesis mainly studies the reproduction of recovery chain of electronic waste in China based on the theory of circular economy.
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