抽样

This paper analyses the indicator diagram filtered by traditional GFSF method, shows the advantages and disadvantages of it and provides a modificatory method.

本文分析了传统广义频率抽样滤波法处理示功图振荡的优缺点，并对其进行了修正。

Monte Carlo simulation is one of the important methods in structural reliability analysis .

针对结构可靠性分析中重要的方法之一———蒙特卡洛模拟方法，本文提出了一种计算分布参数灵敏度的新方法，此方法不需要新的抽样产生或失效标准的重新评估。

The quantitative method was adopted to investigate the morphometry of the intramuscular arteries with computerlzed model judgement and randomized sample check.

运用计算机的模式判别和随机化抽样测量，对肌内动脉分枝进行了定量研究。

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。

Methods A total of 6 352 students were chosen by multi stage randomized sampling, the information of the students aged 7-8 were collected by face to face interview, students aged 9-18 by self administered questionnaire. Results The incidence rate of injury was 48.0%, and there were 30.4% of the students reporting had committed injury. Every injury case had 1.58 injuries during one year averagely.

用4阶段分层随机整群抽样方法抽取大城市、中小城市、一类农村和二类农村各3个县区进行调查，每个县抽取1所学校，共对6 352名学生进行调查，小学一、二年级学生面对面访谈，三～六年级学生在调查员和老师的指导下完成，初、高中生自填。

Multi-stage random sampling method is used, and the sample size is 750 persons in total.

采用多阶段系统随机抽样的方法，抽取750人进行入户调查。

Methods 18 583 subjects were randomly selected from three cities and three counties by multistage sampling method.

采用多级抽样方法，对辽宁省3市3县18 583名居民过去1 a中的伤害情况进行调查。

METHODS: A total of 1 536 people in rural areas of shaanxi were studied by cluster random sampling methods. All particants were checked by slit lamp, and the people who were more than 50 years old carried out the standard examination by internal criteria. Then they were examined by LOCS Ⅲ in mydriatic situation when there were no contraindication.

遵循按比例、随机、整群抽样的原则对陕西省洋县 1 536人进行白内障患病率的横断面调查，所有受检人员均采用裂隙灯检查晶状体，年龄≥50岁的人，先在小瞳孔下按照国内诊断标准进行检查，如无禁忌再充分散瞳后，按LOCSⅢ标准进行检查。

objective To assess the efficacy of Triamcinolone acetonide nasal spray in treatment of allergic rhinitis in children.

目的 观察曲安奈德鼻喷雾剂对小儿常年性和季节性鼻炎的疗效方法按随机抽样的方法对68例6～12岁常年性和季节性鼻炎患儿喷鼻。

Methods The patients were randomly divided into a electrotherapy combined with hand twirling needle therapy treatment group of 63 cases, and a simple electrotherapy control group of 57 cases.

采用完全随机抽样法将观察病例分为电针结合手捻针组63例，单纯电针对照组57例。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。