查询词典 sampling methods

Methods By use of cluster sampling,students from 52 schools(1 high school,11 junior middle schools,40 primary schools)in Chengguan District were investigated and measured in height,weight,chest circumference and pulse.In the end,all the results were analyzed.

方法采用整群抽样的方法，以兰州市城关区52所学校(高中1所、初中11所、小学40所)7~18岁儿童青少年为对象，对所有对象进行身高、体重、胸围、脉搏测量和统计学分析。

Quality control methods on dust sampling and weighting process of filtering cartridge are pointed out based on dust monitoring practices and comparative researches.

通过对烟尘测试的实践和对比研究，提出了烟尘测试中滤简的称量过程和烟尘采样过程的质量控制和方法。

Methods a cluster stratified sampling method was used to chose 3 989 pupils from six schools of different levels in xiamen. they were investigated with conners parent symptom questionnaire.

采用整群分层抽样法抽取厦门市6所不同层次的小学一～五年级学生3 989名为调查对象，应用conners量表进行调查，dsm-ⅳ诊断标准确诊。

Methods To adopt multiple phase,stratified random sampling and questionnaire survey,857 donators involved.

采用分层随机抽样的方法，对前来献血的857名献血者进行调查，并对知情人进行访谈。

Methods A questionnaire survey was conducted among 698 blood donators without compensation enrolled by random sampling.

采用专门设计调查表，对随机选择自愿参加个人无偿献血人员共698人进行调查。

Title Technical Memorandum on Procedures and Methods for Sampling and Analysis of Trade Effluents.

工商业污水采样与分析的步骤及方法技术备忘录。

On the basis of summarizing the status quotation of related researches at home and abroad, problems in related researches and studies are analyzed and the important research fields and contents in marsh sedimentology are chosen:Establishing different model of marsh sedimentation, to support marsh definition and classification from sedimentology; Advancing theory and quantification, to analyze formation process of marsh from quality to quantity methods; Applying modern sampling system and setting up standard sedimentation profiles; Strengthening the research of gleying marsh inland and its recent process and evidence derived from sedimentation profile; Enlarging geography fields and comparing between spatial and temporal research, and enforcing regional short timescale and highresolution environmental change; Paying much more attention on correlations between watershed environment and information derived from marsh sedimentary records and especially on their controlling mechanism.

主要从学术文献、权威机关与科研机构两个方面对相关的国内外研究现状和进展进行总结，针对国内外研究现状和存在的问题提出了今后研究的重点：建立不同成因的沼泽沉积环境模式，从沉积学角度对沼泽定义及分类提供支撑；注重理论提升与定量化，使沼泽形成过程分析从定性描述走向定量化；注重现代化采样系统的应用与标准沉积剖面的建立；加强内陆潜育沼泽研究，注重现代过程与沉积剖面证据；扩大地理覆盖面，加强时空对比，加强沼泽区域性短尺度、高分辨率环境演化研究；深化沼泽沉积信息与流域环境变迁耦合机制研究。

Methods:4640 children under 5 years old by the method of random sampling in four blocks in communities of Liuzhou was conducted , to measure their heighs and weights.Then do regression questionnaire surveys in some parents of these children.

在柳州市四个城区采取随机整群抽样的方法抽取5岁以下儿童共4640名进行身高体重测量及对其中部分儿童家长进行回顾性问卷调查。

The first step was to use some very vigorous sampling-based methods to estimate population densities of herbivores.

第一步就是采用一些有效的取样方法估算食草动物的种群密度。

Another method is fault location algorithm using short data window in the calculation. Because the saturation time of current-transformer lag behind the instant of fault occurrence, it is possible to determine the fault location utilizing the sampling data prior to the saturation. The simulations showed that both of the methods can solve the problem of current-transformer saturation.

方法二是短数据窗定位算法，通过大量仿真发现电流互感器的饱和要滞后于故障短路时刻，短数据窗法就是抢在互感器饱和之前，利用未饱和的有效数据来计算故障点位置。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。