Overlap grid is selected for helping calculate aeroacoustics following and apply symmetrical boundary condition.
为方便后面声场的计算和对称边界条件的实施，选用重叠网格。
The kernel based weighted KNN algorithm solves the multi peak distribution problem and the overlap boundary problem of the sample set, as well as the classifier's precise decision problem.
基于核的距离加权KNN算法解决了样本的多峰分布、边界重叠问题和分类器的精确分类决策问题。
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