采用多阶段整群分层抽样方法。
Multistage stratified cluster sampling method was used for the sampling.
提出一种面向分类规则提取的分层抽样算法。
A stratify sampling algorithm for extracting classification rules is proposed in the dissertation.
设计：分层抽样，随机分组对照，量效分析。
DESIGN: Grade sampling, randomized controlled quantitative analysis.
分层抽样可以减少由简单随机抽样造成的抽样误差。
Stratified sampling can reduce the sampling error associated with simple random samples.
方法进行问卷调查；采用多阶段整群分层抽样方法。
Methods Questionnaire and multistage stratified cluster sampling method were used for the survey.
分层技术是遥感分层抽样调查与监测方法中的关键技术之一。
Stratification is one of the key techniques in stratified sampling investigation and monitoring using remotely sensed data.
方法采用分层抽样的方法在全省抽取138家医疗机构开展调查。
Methods The survey was conducted in 138 medical institutions selected by stratified samplings in Yunnan province.
在简单随机抽样方法的基础上提出了分层抽样的模糊综合评价模型。
A layered sampling model for fuzzy comprehensive evaluation was developed based on simple random sampling methods.
采用分层抽样方法，对36所学校、156间教室进行卫生学调查。
Hygiene investigation was carried out in 156 classrooms of 36 schools with stratification sampling.
关于数据流抽样的论文，包括基于密度的抽样，动态分层抽样等。
Sample papers on data flow, including density-based sampling, stratified sampling and other dynamic.
方法采用分层抽样的方法对山东省8个城市65岁及以上老人进行抽样。
Methods Elderly people aged 65 years or over by multistage sampling in 8 cities of Shandong Province were interviewed at home by trained interviewer.
根据设备的特点及分层抽样理论，将分别比估计应用于机器设备整体评估中。
According to the characteristic of equipment and stratified sampling theory, the separate ratio estimator is applied to the appraisal of machinery and equipment.
方法使用分层抽样的方法在全国范围内抽取250家医疗机构开展大规模调查。
Methods A large-scale survey was conducted at 250 medical health units based on stratified sampling.
由于该抽样调查采取的是分层抽样，因此相应地用分层抽样下的样本轮换研究。
As the sampling survey is stratified sampling, so the research of the sample rotation is under the stratified sampling.
方法采用分层抽样，抽取洛川、彬县育龄妇女入户进行妇幼保健现状问卷调查。
Methods Stratified sampling methods were used to carry out the prevalence study of maternity and child care for women at child bearing-age in Luochuan County and Bin County.
方法采用多阶段随机分层抽样方法，对1261名40岁以上居民进行问卷调查。
Methods Cluster, stratified and multistage sampling was taken. 1261 residents over 40 years old were assigned to fill in the questionnaires designed by WHO.
方法采取分层抽样方法，分别对口腔健康观念与行为情况进行问卷调查、填写记录。
Methods Under stratified sampling, the investigation of the oral health concept and behavior were carried out using closed type questionnaire method.
方法遵照全国医疗照射调查的统一方案，采用分层抽样调查、普查和典型调查相结合。
Methods Complying with the united plan of medical survey nationwide, we combined sampling survey in various layers with general survey and typical survey.
定义和应用确保数据准确和完整的技巧，如随机抽样法、分层抽样法、样本同质性等。
Define and apply techniques for assuring data accuracy and integrity such as random sampling, stratified sampling, sample homogeneity, etc.
现有的分层抽样算法中故障率数据不准确是导致测试性验证试验结果不可信的一个原因。
Inaccuracies in the present proportionate stratified sampling algorithm based on fuzzy failure rate data is one main cause which makes the testability demonstration results untrustworthy.
方法：采用分层抽样调查方法，对本区域24所不同级别医院的医疗质量进行全面调查。
Method To carry out the comprehensive investigation on the medical quality of 24 different level hospitals in this area, which selected by stratifying sampling.
该项抽样技术体现了分层抽样与交叉抽样的有机结合，有利于提高抽样调查的估计效率。
This sampling technique shows the organic combination of the delaminated sampling and the intercrossing sampling, which is in favor of raising the estimation efficiency of the sampling survey.
方法：采用分层抽样的方法，抽取260名流动人口和359名当地居民进行问卷调查。
Methods A questionnaire survey was conducted among 260 migrant workers and 359 urban dwellers in Shaoxing county, selected by cluster sampling.
具体介绍了砼强度检测抽样的几种方法：现行规程抽样法；简单随机抽样法；分层抽样法。
This paper introduced several methods about the concrete strength inspection: the sampling method given by the present specification; simple random sampling without replacement; stratified sampling.
方法采用分层抽样方法对本区外来流动儿童免疫接种现状及其影响因素进行流行病学调查。
Stratified sampling method was applied to investigate immunization status of ecdemic children and its affecting factors in Baoshan District.
但到目前为止，地质数据的抽样检查基本上采用百分比抽样方案及简单随机和分层抽样方法。
However, percent sampling has been mainly used for sampling inspection of geological data till now.
红脂大小蠹寄生的树木和新伐桩有分层抽样的必要及其空间分布格局经拟合为负二项聚集分布。
It is necessity that stratified sampling is used to investigate to the trees and the new stumps, and the spatial distributing pattern of the red turpentine beetles was Negative Binomial Distribution.
采用分层抽样方法和分类资料统计方法，开展四川省农村卫生适宜技术推广影响因素调查研究。
The influencing factors of feat technique in hygiene were investigated in Sichuan with the method of the stratified sampling and the categorical data analysis.
方法 采用分层抽样和随机抽样方法对15家 医疗机构和2 937名疟区居民进行流行病学调查。
Method 15 hospitals and 2 937 residents were selected and studied through random and systematic sampling methods in Hainan Province.
采取分层抽样法，从青岛某理工院校抽取被试850名，收归有效问卷809份，有效问卷归收率为95.18%。
Stratified sampling method, from a polytechnic school in Qingdao test samples were 850, 809 valid questionnaires were valid for the 95.18 percent response rate.
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