In the end, it selects adequately several hi-technology enterprises in Xi 'an as samples and applies this method to evaluate their efficiency of technology innovation.
最后应用此方法，选取适当样本，对西安市高新技术企业技术创新进行了效率评价。
3
Knowledge is not only an endogenous variable, but also an exogenous variable, which is the base to understand the characteristic of the returning law of hi-technology in knowledge-based economy.