英语词汇sample covariance怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	sample covariance
释义	sample covariance 简明释义样本协方差：用于衡量两个随机变量之间的线性关系的统计量，表示两个变量的变化趋势是否相似。网络释义 1 [统计]?抽样协方差 ... 表型协方差 phenotypic covariance 抽样协方差 sampling covariance 多元协方差 multiple covariance ... 短语 1 covariance for stratified sampling 统计分层抽样协方差 2 covariance for cluster sampling 统计整群抽样协方差双语例句 1 Cyclic sampling design was used to investigate leaf area index(LAI)in flux contributing source of eddy covariance flux tower swamp ecosystems of Haibei. 使用循环采样设计方案，对海北沼泽化湿地生态系统涡度相关通量观测塔的通量贡献区内叶面积指数进行了实地调查。
随便看	enveloping algebra enveloping cell enveloping curvature enveloping curve enveloping layer enveloping line enveloping plane enveloping power enveloping ring enveloping enveloping solid enveloping space enveloping space surface enveloping surface enveloping surface of folds enveloping teeth enveloping worm enveloping worm gear pair enveloping worm-gear reducer enveloping worm gear reducer enveloping worm wheel envelop manual feed envelopment envelopments envelop of function

英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。