摘要：Gross Domestic Product(GDP)refers to the final products at market prices produced by all reside nt units in a 8untry(or a region)during a certain period of time.Gross domestic product is expressed in three different forms,i.e.value,in come,and products respectively.GDP in its value form refers to the total value of all goods and services produced by all resident units during a certain period of time,minus the total value of in put of goods and services of the nature of non-fixed assets。

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