The existing theory of international trade could be distinguished into two main sorts named comparative advantage based on factor analysis and competitive advantage based on competitiveness.
基于要素分析的比较优势理论和基于竞争力分析的竞争优势理论是国际贸易的两个主要理论。
The main formation condition and main trigger factor of landslides over the upper reaches of the Fujiang River were studied by the method Of relation degree analysis of GreySystem Theory.
采用灰色系统理论的关联度分析方法，研究了涪江上游滑坡的主要形成条件及触发因素。
Methods: the latent variable scores theory of confirmatory factor analysis was discussed and latent variable scores were estimated with LISREL program.
方法：探讨验证性因子分析中潜变量得分的估计原理，潜变量得分的估计采用LISREL软件编程实现。
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