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社会核算矩阵(Social Accounting Matrix,SAM)是"以正方形矩阵表示的SNA账户,刻画了供给表、使用表与部门账户间的关系;它反映了一定时期内社会经济主体间的各
The Social Accounting Matrix (SAM) is an SNA account in the form of a square matrix that characterizes the relationship between supply and use tables and departmental accounts. It reflects the relationship between the social and economic entities