该杂志把这描述为“一条灰色产业链”。

The magazine described it as a “chain of gray industry.”

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以位于农牧交错带的康保县为例，采用灰色关联度分析法研究了康保县农业产业结构因素之间的关系。

The relations among relative structure factors within agricultural industrial system of Kangbao country were studied with gray correlation analysis.

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利用灰色关联分析，分析了江西省各产业对GDP的影响。

The influence of the first, second and third industries on GDP of Jiangxi province is analyzed by grey incidence analysis.

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