求翻译：本文采用先理论后实证的研究方法，在论述相关研究成果和理论分析的基础上，提出企业核心业务和公司绩效之间的研究假设，以我国汽车行业的上市公司2008年至2010年财务数据为研究样本，对汽车行业上市公司企业核心业务和公司绩效的相关关系进行了实证分析。实证研究结果表明：我国汽车行业的上市公司其核心业务与经营绩效有着较密切的相关性，并且核心业务对其影响是正相关的关系，通过弹性分析得出汽车行业的核心业务变化1%，其企业的经营绩效就会相应的变动4.49。即企业的核心业务对企业的绩效贡献较大。是什么意思？

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This article after a first theory, empirical research methods in dealing with relevant research and theoretical analysis on the basis of their core business and corporate performance between the assumptions in a study of the country's automobile industry listed company 2008 to 2010 financial data sa

This article after the first theory of empirical research methods, related research results and are discussed in the theoretical analysis on the basis of the proposed research assumptions between the enterprise's core business and corporate performance, to automobile industry in China's listed compa