查询词典 stratified sample

The seeds are stratified under lab condition. The average of high temperature is 19.36℃(2～4 months), the embryo completes the differentiation of the seed leaf, the radicle and plumule in this period.

在层积过程中，定期测定了种子的呼吸速率，可溶性蛋白、还原糖、粗脂肪和有机酸的含量，同时还测定了过氧化物酶和过氧化氢酶的活性。

A portion of the Martian South Polar Cap, showing stratified layers exposed by a long process of sublimation.

在火星的南极第一部分，显示了一个漫长的过程升华暴露分层层。

All the premiss are the same as in [1] except the media are now considered as stratified in structure and the influences of the bore hole and of the invaded zone were neglected.

除了现在考虑的介质是层状结构，并且略去了井眼和侵入带的影响之外，所有的前提都和参考资料[1]相同。

A total number of 2,422 people who were extracted by Stratified cluster sampling design and Probability Proportional to Size were used.

其中自北部机构有592人，中部机构有576人，南部机构有646人，东部机构有187人，总样本数共为2001人。

Methods The multi stratified grouping random sampling method and the proportional sampling was used.

本次流调方法与全国第四次流调方法基本一致，采用分层整群等比例随机抽样方法。

The subjects are 609 students sampled from a junior high school at Taipei County by stratified proportional random sampling method.

本研究以台北县某国中学生为母群体，采分层比例随机抽样方法，抽出样本609人。

The purpose of this study is to investigate the relationship among Perfectionism, Self-esteem and Depressive tendency of Adolescents. Questionnaire survey were utilized as the method of this study. Subjects consisted of 686 junior high school students and 612 senior high school students in Kaohsiung City, and they were selected by stratified proportional cluster sampling.

本研究旨在了解青少年完美主义、自尊与其忧郁倾向之相关研究，采问卷调查法，使用分层比例丛集取样的方式，以高雄市国中生686人和高中生612人为样本进行调查。

Methods Stratified random proportional sampling method was used to interview undergraduate students. Version 3.0 of the Composite International Diagnostic Interview of World Health Organization (WHOCIDI3.0) was applied for investigation.

应用分层按比例随机抽样的方法，采用世界卫生组织复合性国际诊断交谈表3.0(WHOCIDI3.0)对在校本科生进行访谈。

Methods: According to the principle of stratified proportional sampling, a total of 1605 adult subjects from 17 cities and their surrounding rural areas of China was measured by CWVDT.

自编中文字词识别测验，经条目筛选后采用分层比例抽样方法，在全国五个行政区17个大中城市及周边农村抽取样本1605例。

A data collection at the 3rd week of the postpartum period included 512 postpartum women. They were recruited in the study using proportional stratified quota sampling by birth rate from clinics and hospitals in Kaohsiung City in the southern part of Taiwan.

研究资料在产后第三周进行收集，以南台湾的高雄市医院和诊所的新生儿出生率为依据，采用比例性分层取样法，共计512位产妇参与本研究。

Cable dampener cannot be rolled up but must be hung over the cable.

缆帆不能被卷起，必须保证处于展开状态

"This skylark is a present from my master," he says.

"这只云雀是我主人献上的礼物。"他说。