但销售反应函数的研究仍徘徊在基于可见确定因素的静态模型中，缺少对不确定竞争因素的进一步分析，使它的应用受到了限制。
But the research of sales response function stays at static model based on certain factor . The research is lack of further analysis of uncertain competitive factors , so its application is limited .
销售反应函数