本发明提供一种可伸缩鞋跟的鞋子，所述鞋子的鞋后跟套装有一 个可伸缩的内后跟，并设有一个用于调控的固定螺栓。
The invention provides a pair of shoes with telescopic heels. A telescopic inner heel is sleeved on the heel of each shoe, and a fixing bolt used for control is also arranged on the shoe heel.
在分析总结现有的橡胶坝螺栓压板式锚固和楔块挤压式锚固方法的基础上，提出了伸缩锚固方法。
Based on the summarizing and analyzing of the traditional boltplaten and wedge-squeeze anchoring methods of rubber dam, the extension-type anchoring method is introduced in this paper.
应用推荐