查询词典 cluster sampling

Methods Seventy-five stu-dents were recruited based on cluster sampling for this study.

目的 探讨健康教育对护理本科生艾滋病知识和态度的影响。

Methods A questionnaire investigation was carried out among pupils, parents and teachers by cluster sampling.

采用整群抽样对学生和家长教师进行问卷调查。

A structured questionnaire was administered to 1091 students who were selected by cluster sampling.

以问卷调查法针对33所原住民国小1250名学童为对象，有效问卷1091份。

Methods 1118 students in 4 senior high schools in Dongcheng District of Beijing were sampled by random cluster sampling.

方法采用整群随机抽样的方法，抽取北京市东城区4所中学的高中一、二、三年级各2个班，共1118名学生，用中学生心理健康诊断测验量表进行测评。

MethodsA cluster sampling of 1 474 middle-aged intellectuals was measured by the SCL-90 table and was analyzed by the Reliability Analysis, Principal Component Analysis and Analysis of Variance.

方法采用整群抽样方法，应用症状自评量表SCL-90对1474名中年知识分子进行心理状况测评，运用尺度分析、主成分因子分析和方差分析。

Methods Random cluster sampling method was adopted to select 6593 people of 3 villages as respondents of dermatosis epidemiological investigation.

采用随机整群抽样方法，选择3个自然村的6593人作为调查对象进行皮肤病流行病学调查。

From the RAPD analysis data, the band similarity rates and average band similarity rates between two individuals in the sampling population, average band allele frequencies, average band heterozygosis degree, and the Shannon genetic diversity index were calculated to perform the cluster analysis of heterozygosis arithmetic averages and construct the phylogenetic tree.

根据RAPD结果分别计算了两两个体间的带纹相似率、平均带纹相似率、带纹的平均等位基因频率和平均带纹杂合度及遗传多样性指数，作亲缘关系的类平均聚类并绘制了相关关系聚类图。

For stratified and cluster sampling with inappreciable differences, estimate precision becomes poor.

对于分层抽样和整群抽样，当群体间的差异、群内个体间差异均不显著时，其估计精度往往都很差。

METHODS: We measured eyesight, interpupillary distance, exophthalmos and diopter of the girl students aged 18 or 19 in our school by cluster sampling.

采取整群抽样的方法，对本校18～19岁女性学生进行视力、瞳距、眼球突出度与屈光状态检查。

Methods: The study sample comprised 1 573 35～44 year old and 1 515 65～74 year old Guangdong residents recruited from urban and rural areas through multi stage cluster sampling.

通过多阶段整群抽样方法从城市和农村抽取35～44 岁组1 573 人和65～74 岁组1 515 人为样本，用结构式问卷由经培训的问卷人员进行面对面问卷调查。

Tom: You are right, he worked hard all the time.

你是对的。他一直都是努力工作。

Take shortcomings,failures,and mockings of others as commonplace and a drive to complete oneself,hold your own opinion over the evalution and disscution divested from others,afterwards sink into the state of eliminate mistakes if any or encourge oneself being not being influenced by the sayinngs of others or having no ideas to do.

把缺点、失败及别人的耻笑等看成是一种常事，当成完善自己的动力，对别人的评价和议论自己心中有主见，做到&有则改之，无则加勉&，不为人言所左右或无所适从。