Conclusion: The AP patients are advocated to use fixed combined bridge retainer. 结论:成人牙周炎患者正畸完成后使用固定桥形式的保持器效果好。
Then, through modal analysis, response spectrum analysis, time-history analysis and the secondary stability analysis of bridge tower, it compared the effect of cable retainer and viscous damper. 然后通过模态分析、谱分析和时程分析以及桥塔的二类稳定性分析,对比拉索限位器和粘滞阻尼器的减震效果。