Firstly, we use actuarial survivor curve, value theory of relation marketing, and calculus thought for reference to find average channel life-span;

在模型的求解方法中，借鉴人寿保险精算学生存曲线理论、关系营销价值理论及微积分思想来求取渠道平均寿命周期；

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Public Relation Marketing (PR Marketing) is a newly developed science, which is incorporated with the traditional Marketing and Modern Public Relations.

公关营销学是传统的市场营销学与现代公共关系学相结合而形成的一门新兴学科。

youdao

Public Relation Marketing (PR Marketing) is a newly developed science, which is incorporated with the traditional Marketing and Modern Public Relations.

公关营销学是传统的市场营销学与现代公共关系学相结合而形成的一门新兴学科。

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