西北欠发达资源区产业结构调整的灰色关联分析及路径优化--以延安市为例
서북흠발체자원구산업결구조정적회색관련분석급로경우화--이연안시위례
Gray Correlation Analysis and Path Optimization of the Industrial Structure Adjustment of Undeveloped Resources Area in Northwest:Taking Yan’an City as an Example
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