以电子商务为基础的信息技术的广泛应用，不仅降低了交易成本，而且导致了供应商关系的巨大变化。
Information technology used to support electronic commerce transactions have the potential to trigger significant changes in supplier relationships by reducing transaction costs.
第一代CA由SETCO公司建立，以SET协议为基础，服务于B2C电子商务模式的层次性结构。
The first generation of CA was set up by SETCO based on SET protocols, serving the B2C e-commerce hierarchy.
论文在相关理论研究的基础上，以电子商务环境下的团购为研究对象，分析团购和团购网站的现状和影响因素。
In the relevant papers on the basis of theoretical research, in order to buy e-business environment for the study, analysis and buy buy site status and influencing factors.
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