环境要约与需求演化——影响需求演化和顾客对价值感知的两个因素分析
배경요약여수구연화——영향수구연화화고객대개치감지적량개인소분석
The Environmental Offer and the Demands Evolution: An Analysis of the Two Elements Which Influence the Evolution of the Demands and the Customers' Perception of the Value