“double sampling”的概念、定义、翻译、参考文献-科学参考

　

单词	double sampling
释义	double sampling Encyclopedia 理学数据收集模式释 double sampling二重抽样一种分两步抽取样本的概率抽样方法：首先对从总体中随机抽取的样本量较大的样本（第一重样本）进行简单调查以获取有关总体的结构或辅助信息，然后从第一重样本中随机抽取一个样本量较小的样本（第二重样本）；最终利用抽取的第二重样本对总体所研究的目标量进行估计。又称二相抽样、两相抽样。 Mathematics ＞数理统计＞抽样与统计过程控制＞释义 double sampling二重抽样 double sampling双重抽样^†，二次抽样
随便看	water quality of waterbody water quality of water supply water quality protection measures water quality sampling water quality speciation water quality standard water quality standard for farmland irrigation Water Quality Standard for Fisheries water quality standard for landscape and recreation water quality standards water quality station water quality testing center water quantity measurement water reclaimed of tailings pond waterreclaimed plant water reclamation water-reducing admixture water reducing admixture and plasticizer for concrete water-reflected water related administrative fees water relation water release structure water repellent water requirement water rescue

　

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