Total import and export volume grew by an average annual rate of 15.9%, and the structure of imports and exports constantly improved.
进出口总额年均增长15.9%，结构不断优化。
The function of control file is to define the data relationship between import and export, the structure of import data and the report, the right and the character of users etc.
控制文件的作用就是定义输入输出数据间的关系，输入数据及报表的结构、用户的权限及性质等。
Empirical analysis results prove that the ascending of real effective exchange rate is good for export structure upgrade, but its role on import structure is disappointing.
通过实证论证实际有效汇率的升值有利于我国出口结构的升级，但对进口结构升级影响并不显著。
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