This thesis shall study the cost benefit of each link about the beef cattle industry chain.

本文旨在从产业链的各个环节出发，研究和分析各个环节的成本收益。

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This thesis shall study the cost benefit of each link about the beef cattle industry chain.

本文旨在从产业链的各个环节出发，研究和分析各个环节的成本收益。

youdao