“primary sampling unit”的概念、定义、翻译、参考文献-科学参考

单词	primary sampling unit
释义	primary sampling unit Mathematics ＞数理统计＞抽样与统计过程控制＞释义 primary sampling unit初级抽样单元＞数理统计＞抽样与统计过程控制＞释义 primary sampling unit一级抽样单元 primary sampling unit一级单元^†
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