求翻译：对反映行业经济效益的总资产贡献率、资产负债率、流动资产周转次数、工业成本费用利润率和产品销售率等五个经济指标进行主成分分析，提取反映行业盈利能力和市场能力的两个综合指标。然后通过因子分析法分析反映经济效益的各指标的内部结构，表明行业经济效益主要由盈利能力和市场能力两个公因子决定。根据各行业在盈利能力上的得分和市场能力上的得分将工业行业分为五类，并对各行业经济效益进行综合评价。然后用聚类分析对综合评价结果进行验证，表明综合评价较为客观合理。最后，本文给出相应的政策建议。是什么意思？

To reflect the industry's contribution rates, asset-liability ratio of total assets, current assets turnover, industrial costs cost margins and product sales rate five economic indicators such as principal components analysis, extracting reflect two composite indicators of profitability and market capacity. And then through the analysis of the factor analysis reflects the internal structure of the index of economic efficiency, that mainly consists of industry profitability and market ability of two common factor decision. Based on the scores on the profitability of industry and market ability score on the industrial sector is divided into five categories, and on the comprehensive evaluation of industry. And then use the clustering analysis to comprehensive evaluation to verify the results, indicating that comprehensive assessment more objective and rational. Finally, given the appropriate policy recommendations.