Kernell谢内尔kerneln.核心；仁；中心；精髓kernel-based clustering核聚类kernel density estimation核密度估计kernel component analysis核函数主元分析kernel function parameter核函数参数kernel-object mechanism内核对象机制kernel preserving functor核保存函子kernel feature extraction核特征抽取kernel quantile estimator核型分位数估计kernel of a configuration格式核心kernel level thread modell内核级线程模型