[数]随机样本；随意抽取调查；[天]随机样品

n.随机抽样调查

random samples───[数]随机样本；随意抽取调查；[天]随机样品

random sampling───[数]随机抽样；随意采样

random samplings───[数]随机抽样；随意采样

random rubble───乱砌毛石

random walk───[数]随机游动；[热]无规行走

random variable───[数]随机变数，[数]随机变量；无规变量

random variables───随机变量；随机变数

blood sample───血液样本；血样；血液样品

floor sample───地板样品

A random sample of 50 flights was taken over a 30 period.───50个航班随机抽样样本是经过30天获取的.

The survey used a random sample of two thousand people across England and Wales.───该调查在英格兰和威尔士随机抽样了2,000人。

The survey used a random sample of two thousand people across the Midwest.───这项调查使用的是对中西部地区2000人的随机取样。

The interviews were given to a random sample of students.───随机抽选出部分学生进行了采访。

We based our analysis on a random sample of more than 200 males.───我们把我们的分析基于二百多名男性的一组随机抽样。

Also, this was a non - random sample.───还有, 这是[ 非 随机]抽样.

The survey used a random sample of two thousand people across England and Wales.