ประโยคภาษาจีน : 中文句子 |
---|
fāng fǎ 方法 fēn céng 分层 suí jī 随机 zhěng 整 qún 群 chōu qǔ 抽取 hè gǎng shì 鹤岗市 míng 名 zhōng xiǎo xué shēng 中小学生 jìn xíng 进行 wú jì míng 无记名 wèn juǎn diào chá 问卷调查 |
Methods: An anonymous questionnaire was completed on a stratified cluster sample of 1735 elementary school and middle school students who were randomly selected from Hegang. |