Secondly, the diffusion of bank cards is influenced by the external and internal factors, and the S-shaped logistic curve indicates the characteristics of the bank cards' diffusion.
第二，银行卡在银行业的扩散受到外生因素和内生因素的影响，反映银行卡扩散特点的逻辑曲线呈现S型；
Secondly, the diffusion of bank cards is influenced by the external and internal factors, and the S-shaped logistic curve indicates the characteristics of the bank cards' diffusion.
第二，银行卡在银行业的扩散受到外生因素和内生因素的影响，反映银行卡扩散特点的逻辑曲线呈现S型；
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