...整群抽样调查 [gap=1471]rental rearing patterns; middle school student; personality traits; correlation; cluster sampling study ...
基于1个网页-相关网页
cluster sampling study
整群抽样研究
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Method:A cluster sampling study on the condition of injuries was conducted among 1059 rural inhabitants in a certain township in Tongjiang County, Sichuan province from Jan 1998~Jan 1999.
方法：采用整群抽样方法，对四川省通江县某乡1059名农村居民一年中伤害发生情况进行调查。
youdao
应用推荐
模块上移
模块下移
不移动