stratified sample是什么意思

网络释义

用法例句

The model of food intake,which utilizes lognormal distribution function to estimate the distribution of food intake,proposes a ″hierarchical samples allocation″ model to ensure well-proportioned quantity in small sample space among sampling areas divided based on climate,geography,economic and geographical factors.

人群食物摄入量模型用"对数正态分布"估计食物摄入量分布,在对国家依据气候、地理、经济等因素进行地域划分的基础上提出了能够保证小样本空间条件下采样均匀的"层次化样本分配模型"用于采样点的选取和各采样点样本数量的分配;污染物分布模型用"贝塔分布"估计食物中的污染物分布,并采用样本在时间轴上平移的方法解决了数据在时间上的不完整性问题;风险评估模型基于人群食物摄入量和食物污染物分布模型,提出"矩元法"对污染物摄入量进行评估,并给出了模型数值化求解和右分位点确定的相关算法。

In order to have a more reasonable use of testing data, samples from population were stratified suggested by stratified random sample model (SRAM).

　裂纹扩展速率与应力强度因子幅值的关系曲线,是金属构件损伤容限设计及寿命预测的重要疲劳性能数据·　为了充分、合理地运用在不同测试条件下获得的试验数据,分层随机样本模型,将总体样本分为若干层,每一层样本都是在相同的测试条件下获得的试验数据,结合压力容器的实际工作状况,对每一层样本赋予适当的权重,从而对疲劳裂纹扩展速率方程做出更符合实际要求的估计·　实际计算表明,对不同炉号试样提供的Q235A级钢材的裂纹扩展速率数据,运用分层随机样本模型得到的结果,明显地优于运用简单随机样本模型分别处理每个炉号试样提供的数据所得的结果·

An Attack Tree Approach for SCRIPT Virus Sample Analysis;

基于攻击树的脚本病毒样本分析方法

Methods:Make a sample analysis of all neonates born in centric hospital of aerial industry from January to June 2006.

方法:对本院2006年1~6月间所有新生儿出生信息进行样本分析。

Dynamic Bayesian Network Model Based on Analysis of Samples;

基于样本分析的贝叶斯网络动态建模

Sample Analysis on the SPA Taichi Boxing Exercises;

基于SPA太极拳健身运动的小样本分析

Functional Study of Band-4 Compositions Marked 2 and 5;

四级写作低分段评分样本的功能分析

The Multifractal Analysis for the Sample Paths of Additive Brownian Motion

可加布朗运动样本轨道的重分形分析

The Multifractal Analysis for the Sample Paths of Certain Types of Gaussian Processes;

某些Gauss过程样本轨道的重分形分析

The Multifractal Analysis for the Sample Paths of Multi-parameter Wiener Process;

多指标Wiener过程样本轨道的重分形分析

A Research on the Sample Size of OD Survey and the Optimization of OD Matrix Sample;

OD调查样本容量分析及抽样OD矩阵优化研究

Discussion on multiple objective optimum sampling number analysis method of industry at Province level;

省级工业多目标抽样最佳样本数目分析法初探

Analysis of Elements Influencing the Sample Size in Statistical Sampling Tests;

统计抽样测试中影响样本量的因素分析

Causative analysis of towing pollution in automatic sampling system

全自动加样系统出现样本拖带污染原因分析

Then they bring their samples back for laboratory analysis.

他们带回样本，拿到实验室做分析。

Joseph Fourier",,"Mathematical Analysis is as extensive as nature herself.","

数学分析与自然界本身同样的广阔."

The Efficiency Research and Sensitivity Analysis on Sample DEA;

样本DEA有效性研究及其灵敏度分析

The Analysis of the Influence of Incomplete Sample Size on Process Capability;

非完整样本容量对工序能力影响分析

A semantic analysis of How the Butterfly Changes to the Sample by Hainan;

海男《蝴蝶是怎样变成标本的》意蕴分析

Analysis of the specimens with positive HIV antibody in screening tests from general hospitals

综合医院HIV抗体筛查阳性样本的分析

Theoretical Analysis of Direct LDA in Small Sample Size Problem

在小样本条件下直接LDA的理论分析

Survey on Rural Households' Credit Behavior Based on Sample Counties in XinJiang

新疆样本县(市)农户借贷行为调查分析