randomly selected sample的意思|示意

The sample was randomly selected using an electronic database and printed telephone directories to ensure sample representativeness from all Australian states and territories.

使用电子数据库和电话号码簿随机选择样本，以保证样本可代表澳大利亚各州和地区。

In sample plots, sample trees are randomly or systematically selected and growing process is studied by stem analysis.

即在标准地中采用随机或机械抽样方法选取样木，进行树干解析，获得样木生长过程；

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.

方法：分层随机整群抽取鹤岗市1735名中小学生进行无记名问卷调查。

The study sample consisted of 239 consecutive suicide attempters treated in the emergency departments of four randomly selected general hospitals in Shenyang, a city in northeast China.

研究样本共239名，随机抽取自沈阳的四家综合医院的急诊室接诊的自杀未遂者。

A randomly selected sample of 1003 of these participants were interviewed about personal and clinical parameters, including any history of malignancy.

在这些参与者中随机选出1003名做为样本，调查其个人和临床情况，其中包括所有恶性肿瘤史。

A randomly selected sample of 1003 of these participants were interiewed about personal and clinical parameters, including any history of malignancy.

在这些参与者中随机选出1003 名做为样本，调查其个人和临床情况，其中包括所有恶性肿瘤史。