What is market segmentation?

一个市场分许多细小部份。如汽车市场按成年人,退休者,刚从大学毕业的人,男性,女性等许多分市场。这就是按潜在顾客分的market segmentation。见下面释意：market segmentation：A marketing term referring to the aggregating of prospective buyers into groups (segments) that have common needs and will respond similarly to a marketing action。