查询词典 sampling methods

Methods Random sampling method was used to collect samples twice from the spray-paint plants during the work time and 0.5 hour after work; the samples were sent to the laboratory and detected according to the national standard.

采取随机抽样方法，对每个喷漆车间工作时和停工后0.5h采样2次，采样4h内送实验室，按国家有关标准直接进样检测。

Methods 52 patients who were chosen by convenient sampling were measured the anxiety levels in three different time spots with the STAI scale before their operations in ICU and after transferred to wards.Meanwhile,patients general information was collected by free talk.

采用方便取样的方法选择心外ICU的成年病人52例，分别在病人术前、术后进入ICU中及转入普通病房后，应用状态-特质焦虑问卷对病人的心理焦虑水平进行测评，同时以访谈的形式收集病人资料。

In the first section of this paper,we establish basic methods and theories of multivariate Sampling and obtain lots of results of statistical inference.

本文第一部分建立了较为系统的多元抽样方法和理论，第二部分解决了多维时间序列统计推断中一个具体问题。

Should strengthen data collection, collation and analysis of the work, to improve sampling and statistical inference methods for macro-control to provide a solid foundation.

应加强数据收集，整理和分析工作，以提高抽样和统计推断方法的宏观调控提供了坚实的基础。

And then, the contiunous current modeof this circuit is discussed, and the PWM circuit and over-current -protection circuit are designed. At the same time, the calculation methods of storage inductance, output capacitor and sampling resistor are given.

讨论电路的电流连续工作模式，设计了电源的脉宽调制电路和过流保护电路，并给出了蓄能电感、输出电容和输出电压取样电阻的确定方法。

Methods 7 282 children aged 2 to 5 years were selected by stratified sampling from twelve software.

分层随机抽取我国12个省市7 282名2～5岁儿童作为研究对象。

Methods Students from 6 high schools in Hangzhou were selected by stratified sampling.

中学生的学习成绩是社会、学校、家庭关注的主要问题。

Methods With stratified clustered sampling method, 375 college students were chosen to complete the questionnaire.

采用分层随机抽样方法，在杭州市的大学中抽取大学生375名进行问卷调查。

Methods Study subjects were selected through stratified sampling and data were collected through questionnaire and physical examination.

方法］采用分层整群抽样的方法获取研究样本，采用问卷调查和体检相结合的方法收集相关信息。

Methods Based on stratified sampling, 363 medical facilities were selected to conduct the survey.

采取分层抽样方法在全国范围内抽取363家医疗机构开展调查。

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。