For the purposes of the study, the authors focused on the aspect of vertical integration that varies the most among the sample firms: the extent to which the firms own their own retail distribution systems.
For the purposes of the study, the authors focused on the aspect of vertical integration that varies the most among the sample firms: the extent to which the firms own their own retail distribution systems.
出于本篇研究文章的需要，两位作者集中考察了垂直整合在被调查公司中差异最大的方面，即公司在多大程度上拥有其所在的零售系统。