税收弹性是税收增长率与经济增长率的比例关系。
Tax elasticity reflects the relationship between the taxation growth rate and the economy growth rate.
产业结构是产业间的关系结构，技术经济联系与联系方式，反映一个国家、地区产业之间的比例关系及其变化趋势。
Industrial structure is the industrial relational structure, the technical economy relation and method, reflects industry proportional relationship and the change tendency of a nation or an area.
土地利用结构的实质是国民经济各部门用地面积的数量比例关系。
The land utilization structure's essence is the national economy various departments land area quantity proportional relationship.
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