通过比较心房扑动（简称房扑）成功消融前后右心房峡部时间间期，分析峡部时间间期的延长程度对峡部完全性双向阻滞的预测价值。
The purpose of this study was to determine whether the extent of prolongation of the transisthmus interval after ablation predicts complete bidirectional block.
通过对浮环减薄前后实验结果的对比分析，研究了浮环厚度变化对浮环轴承涡动及稳定性的影响，并给出了三维谱图、涡动比与转速图、典型分岔图。
Based on two experiments on floating ring bearing before and after floating ring thickness reduction, the effect of thickness variation of floating ring on whirl and stability was studied.
而后利用有限元软件MATLAB，对天线振动控制进行仿真，比较作动器优化前后的天线振动响应，经过作动器优化后的天线结构振动得到了更好的抑制效果。
In the MATLAB, the antenna simulation is done about the vibration control, compared response before optimization and after, verify that response after optimized has been better results.
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