water quality representative sample 办质代表样
National Representative Sample 全国代表性样本
perfectly representative sample [统计] 具有完全代表性的样本 ; 具有完全代表性样本
Representative sample selection 代表性样品选择
Representative sample 代表性样本
a representative sample 具代表性的样本 ; 样品
The survey covers a representative sample of schools.
调查覆盖了有代表性的一些学校。
Extracurricular activities reflect the differences in child rearing in the Pew survey, which was of a nationally representative sample of 1,807 parents.
皮尤研究中心对全国范围内具有代表性的1807名父母组成的样本进行了调查，发现课外活动反映了育儿方式的差异。
Extracurricular activities reflect the differences in child-rearing in the Pew survey, which was of a nationally representative sample of 1,807 parents.
课外活动反映了皮尤研究中心育儿方式的差异，这是从对全国1807名家长的代表性抽样调查的结果。
应用推荐