synergy effect短语¹⁴⁴⁹⁷²⁺² 基本例句 协同效应 The eminent competitive advantage of enterprises cluster on the basis of synergy effect attracts researcher's attention from economics and management at home and abroad. 本文首先简介企业集群概念，接着从直接经济要素和非直接经济要素两个方面分析集群的竞争优势。 cnki