George Day (1980) describes model of segmentation as the top-down approach: You start with the total population and divide it into segments.
GeorgeDay(1980)将划分模型作为自上而下的方式：从整个人口出发，分成不同区间。
George Day (1980) describes model of segmentation as the top-down approach: You start with the total population and divide it into segments.
GeorgeDay(1980)将划分模型作为自上而下的方式：从整个人口出发，分成不同区间。
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