Last year, the contribution rate of China telecom industries' to national economy was 3%-4% and it will be reach to 7% approximately by the year of 2005 or 2006.
去年中国电信业对国民经济的贡献率为3% - 4%，估计到2005、2006年对国民经济的贡献率将有可能达到7%。
However, there are few quantitative studies on the rural tourism's contribution rate to the rural economy; thus, people can not accurately understand the role and the value of rural tourism.
然而，乡村旅游对促进农村经济的贡献率，学术界缺乏定量研究，致使人们无法准确认识乡村旅游的作用与价值。
Chapter 2 is mainly about the contribution rate of human resource to economy growth, and offers the algorithms of determining the contribution share under different conditions of production function.
第二章主要研究人力资本对经济增长的贡献率，给出了不同生产函数条件下测定人力资本贡献份额的算法。
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