作简谐运动的弹簧振子,当物体处于平衡位置时,达到最大值的是。
客户在整个生命周期内给企业带来的所有贡献称为客户终生价值。客户在整个生命周期内给企业带来的所有贡献称为客户终生价值。All of the contributions that customers bring to the enterprise throughout their life cycle are called lifetime value. All of the contribut