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统计学术语,按照一定规则从总体中抽取部分个体进行调查或实验,被抽取的个体形成的集合。
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在数理统计学和调查方法中,样本是指按照一定的抽样设计方法,从总体中抽取的个体集合。
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food safety policy
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food safety risk sampling site
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Food Safety Standards of People’s Republic of China
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Food Science
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Food security for the Military
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Food Standards Agency of Australia New Zealand
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