limitation on scope

In this work,some measures and their combinations,such as uniform pricing,price cap,and coverage constraint are introduced.

介绍了统一定价、价格上限和范围限制等几项措施及措施组合的内容,通过一个实证性模型,分析了各种情况下在位者和进入者均衡价格和均衡服务范围的决定。