“U-statistics”的概念、定义、翻译、参考文献-科学参考

单词	U-statistics
释义	U-statistics Encyclopedia 理学【核心概念】释 U-statisticsU统计量设都是维随机向量，为不超过的自然数，是变元的波莱尔（Borel）可测函数，此处每个都在维欧氏空间上取值。要求是对称函数，即对的任意置换成立。令：则称是以为核的，基于的U统计量。
随便看	rare earth element geochemistry rare earth extraction chromatography separation and purification rare earth fluoride rare earth fluoride calcium thermal reduction rare earth fuzzy extraction rare earth hard magnetic materials rare earth helate rare earth hydroxide rare earth intermediate alloy-vacuum distillation rare earth iodide rare earth ion exchange chromatography separation rare earth ion exchange separation rare-earth-iron garnet rare earth laser material rare earth laser materials rare-earth laser materials rare earth liquid-membrane extraction separation and enrichment rare earth magnetic materials rare earth metal rare-earth metal rare-earth metal catalyst rare earth metal ore deposit rare earth metal refining rare earth metals metallurgy rare earth molten salt electrolysis

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