The membership function of the fuzzy subsets can be actually obtained witha sampling survey method.
用抽样试验的方法实际求取模糊子集的从属函数。
Methods: Census method and sampling survey method were both used to investigate the related data of the second-class large medical equipments in Henan province.
方法：采用普查法和抽样调查法相结合，对河南省乙类大型医用设备的相关资料进行了调查。
Because the soil and water conservation factor was not concluded in net method, the soil erosion modulus calculated with net method was higher than that calculated with sampling survey method.
由于网格法没有考虑水土保持措施因子，调查得到的土壤侵蚀量结果比采用抽样调查法得到的结果偏大。
Objective: To explore the sampling method of telephone survey.
目的：探讨电话访问的抽样方法。
Methods The questionnaire survey was conducted among 1 700 college students with stratified-cluster sampling method.
方法采用分层整群抽样方法对暨南大学在校学生1 700名进行问卷调查。
Method By cotton swab sampling examination of incision wound of laparoscopic operation patients, a survey of contamination condition of laparoscopic operation instruments was carried out.
方法通过对腹腔镜手术病人切口棉拭子采样检测，对腹腔镜手术器械污染情况进行了调查。
In order to know the sanitary quality of disposable sanitary products produced, sold and used in Beijing, field sampling and laboratory examination method were used to carry out a survey.
为了解北京市生产、销售和使用的一次性使用卫生用品的卫生质量状况，采用现场抽取样品和实验室检测方法进行了调查。
Methods By random sampling method, 9 refectories and 366 students usually having their lunch at schools were drawn from Fangshan District, an anonymous questionnaire survey was conducted among them.
方法采用随机抽样的方法，对房山区9所中小学校食堂及366名在校就餐的学生进行膳食及营养教育相关情况的问卷调查。
In communications and transportation circumstances survey, the method of sampling survey was used regularly.
在交通运输情况调查中，经常采用抽样调查的方法。
The "Unit type" lithogeochemical survey method can decrease the numbers of sampling and the amounts of analytic run, and reduce greatly production costs.
“面型”岩石测量方法可成倍地减少样品采集量和分析工作量，大幅度降低了工作成本。
Methods. The survey was conducted according to multi-stage stratified cluster sampling method.
方法：分阶段分层整群随机抽样调查。
RESEARCH METHODThe stratified multi-stage cluster random sampling method was used in the survey.
研究方法本研究采用分层整群随机抽样方法进行抽样。
Methods: Using stratified sampling method to determine the survey places, The schistosomiasis in people and livestock were surveyed by the methods of nylon bag incubation and top - tube incubation.
方法：用分层随机抽样法确定调查点。 用尼龙袋集卵孵化法、顶管孵化法分别对人畜进行查病，用系统抽样结合环境抽样法开展螺情调查。
The method for retaining sampled units in successive sampling survey for changed probability of selection is introduced.
介绍了连续抽样中概率发生变化时保留样本的方法。
Methods The survey of prevalence of dental caries in group aged 12 and 15 years in Anhui province was conducted using the non-proportional, stratified, cluster sampling method.
方法对安徽省四县市的12岁及15岁儿童的龋病发病情况进行抽样调查，采用分层、不等比、多阶段整群抽样的方法。
Methods: Using the pure random sampling method, carries on the residence questionnaire survey to 500 farmers.
方法：采用单纯随机抽样方法，对500名农民进行入户问卷调查。
Methods With the method of cluster stratified random sampling, a questionnaire survey was conducted in medical and non-medical higher-educated school in Jilin city.
方法采用整群分层随机抽样的方法，对吉林市某医学院校及非医学高校的在校大学生进行问卷调查。
Methods: Stratified random cluster sampling method was used to determine the survey sample.
方法：以分层随机整群抽样的方法，确定调查样本。
Method: Using simple random sampling survey and non-structured interviews.
方法：简单随机抽样问卷调查和非结构式访谈。
Methods 445 people living on minimum subsistence allowances in Xuzhou were selected by the method of systematic and cluster sampling with face to face inquiry and household survey.
方法采用系统和整群抽样的方法抽取徐州市低保人员445人，以面对面询问方式进行入户调查。
Method Cluster random sampling method was used to conduct a household survey on the elderly in Luoping Country, Yunnan.
方法采用整群随机抽样的方法，对云南省罗平县的老年人进行入户问卷调查。
Methods a stratified cluster sampling method was used to survey 6 298 girls premenstrual preparations.
方法采用分层整群抽样的方法，对蒙汉族中小学女生6 2 98名进行经前准备情况调查。
Methods a questionnaire was used to survey injury -related knowledge, attitude and behavior of 42 065 students drawn from 4 counties of Zhejiang province by using a cluster sampling method.
方法采用整群抽样法，选取浙江省4个县区的42 065名中小学生伤害的认知和行为进行问卷调查。
The other is to evaluate the experience effect on learners, including the experience sampling method and questionnaire survey.
另一个是对学生游戏过程中体验的评价，主要设计了经验采样法和问卷调查法。
Methods an anonymous questionnaire survey was conducted among 1 650 students drawn randomly from 3 middle schools in Shijingshan County, Beijing using a clustered sampling method.
方法在北京市石景山区随机整群抽取3所学校初一到高二学生1 650人，匿名自填问卷调查。
Gallup was an American statistician who invented the Gallup Poll, a successful statistical method of survey sampling for measuring public opinion.
这位美国的统计学家是盖洛普民意测验的首创者。盖洛普民意测验是为了测量民意对其调查样本进行统计的科学方法。
Methods Questionnaire and multistage stratified cluster sampling method were used for the survey.
方法进行问卷调查；采用多阶段整群分层抽样方法。
Methods: The method of random sampling was conducted to carry on questionnaire survey to 270 rural residents in Hubei province.
方法：采用随机抽样的方法对湖北省270名农村居民进行问卷调查。
The main research methods are literature review, the questionnaire survey method, the sampling method, etc.
研究方法主要有文献综述法、问卷调查法、抽样分析法等。
The main research methods are literature review, the questionnaire survey method, the sampling method, etc.
研究方法主要有文献综述法、问卷调查法、抽样分析法等。
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