该一维有限元列式只需对扇形区域在角度方向上离散，最后的总体方程为一个二次特征根方程。
Discretization in angular coordinate is needed only and the global equation is a second order characteristic matrix equation.
针对该问题，采用核典型相关分析方法进行原始特征的二次提取，得到简约而重要的二次特征。
Kernel Canonical Correlation Analysis (KCCA) is a recently addressed supervised machine learning methods, which is a powerful approach of extracting nonlinear features.
Ajax应用程序的一个特征是，不会导致一次重新加载整个页面。
A characteristic of an Ajax application is that it will not cause an entire page to reload each time.
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