抽样

Approval sample and specification sheet?

工厂QC是否比较首件样品抽样检验和批准的规格表？

Methods Stratified random cluster sampling was applied to conduct the investigation and filter blood spot was collected and examined.

方法采用分层随机整群抽样，开展居民个案调查，同时采集滤纸血滴。

Reliability ; sensitivity analysis ; correlative variable ; Markov chain ; line sampling ; variation coefficient

可靠性；灵敏度分析；相关变量；马尔可夫链；线抽样；变异系数

Methods The sample was obtained from the medical examination data of primary and middle school students in 1982 and 2000 to analyze the changes of body height, body weight, chest circumference and Ververch Index.

采用整群抽样对我省城市与乡村 7～ 18岁学生 2 0 0 0年与 1982年体检资料中的身高、体重、胸围和维尔维克指数的变化情况进行分析比较。

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。

Copper-bearing IUD is more effective for contraception.

国内关于IUD的报道很多，但主要集中在IUD的有效性、安全性的比较研究及新型IUD的研制上[1] ，大规模IUD使用的流行病学调查相对缺乏，特别是在惰性IUD向活性IUD的转换时期，为此，笔者对四川省近年来IUD使用状况及使用中存在的问题进行了调查。1 对象与方法调查采取分层整群随机抽样方法，将全省

A stratified sampling method is used to estimate the cotton field...

设计了满足生产应用的全国作物面积遥感监测抽样运行方法

Combining practice at Nanfen Open Pit and applying statistical analysis,the paper introduces the measuring,analyzing and calculating of reliability of three types of detonating points between detonating cord and nonel tube .

结合南芬露天矿的实际，运用统计分析的方法，对导爆索与导爆管3种类型的传爆结点可靠性进行抽样测试、分析与计算，初步确定了其3种类型传爆结点的可靠性指标，并对其可靠性进行了评价。

Network admins may use it in scripts to periodically sample network traffic.

网络管理员可以用它在脚本中定期抽样的网络流量。

Biggs, who as chief of pension giant TIAA-CREF selects a new auditor every seven years. If you want a really good peer review, that's the way to do it.

毕格斯说，他是每七年选择一个新的审计师的养老金巨人TIAA-CREF的主席，如果你想进行更好的抽样复查，这是最好的方式。

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。