The total effective ratio of two groups had significant difference(P<0.05).
两组总有效率比较，差异有显著性意义（P<0.05）。
Customer value is the difference or ratio of customer perceived benefit and customer perceived cost.
顾客价值是顾客感知收益与顾客感知成本之差（或之比）。
Customer value is the difference or ratio of customer perceived benefit and customer perceived cost.
顾客价值是顾客感知收益与顾客感知成本之差（或之比）。
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