“double random sampling”的概念、定义、翻译、参考文献-科学参考

单词	double random sampling
释义	double random sampling Encyclopedia 农学双重随机抽样法释 double random sampling双重随机抽样法若调查重要性状y不易观察测定，甚至要破坏后才能测定，而试验又不容许将材料过多破坏，则可利用与调查重要性状密切相关便于测定的辅助性状x进行间接的抽样调查，按确定的相关关系从x的调查结果推算y的结果的方法。又称相关抽样法、复式抽样法、两相抽样法、双重抽样。
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