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1·Methods: Adopt method of random sampling.

方法：采用随机抽样法。

2·Method Using stratified random sampling method.

方法采用分层随机抽样方法。

3·Methods Making research on 1021 patients by random sampling.

方法采用随机抽样的方法调查1021例患者。

4·Equivalent sampling has sequence sampling and random sampling.

等效采样分为顺序采样和随机等效采样。

5·Effect of random sampling number on state estimation is discussed.

本文对随机抽样数目对状态估计结果的影响进行了讨论。

6·Methods Simple random sampling was used to choose surveillance counties.

方法监测点的选择采用单纯随机抽样方法。

7·This article shows us the method of random sampling with varies tendency.

本文阐明了带有不同倾向性的随机抽样方法。

8·Methods 755 residents were surveyed on questionnaires by random sampling.

方法随机抽取755位居民，进行问卷调查。

9·To reach that number, the company surveyed a random sampling of 237 office workers.

公司是在对237名上班族进行了随机抽样调查后得出结论的。

10·A mathematical probable model and random sampling method are illustrated, too.

具体说明方法的数学概率模型及随机抽样方法。