systematic sampling的例句大全

compare and analyse between systematic sampling and stratified sampling

系统抽样与分层抽样的比较分析

methods the systematic sampling methods were used. 4 107 residents were investigated by questionnaires and some blood indexes were examined.

方法采用系统抽样方法，对社区4107位居民实施问卷调查和相关指标的检测。

method 15 hospitals and 2 937 residents were selected and studied through random and systematic sampling methods in hainan province.

方法采用分层抽样和随机抽样方法对15家医疗机构和2937名疟区居民进行流行病学调查。

the post-stratification techniques of systematic sampling for domain estimation

系统抽样事后分层情形下域的估计

Application of systematic sampling photography in Boulder size distribution

爆破块度的系统抽样摄影法应用研究

anti-deviation experiments on systematic sampling for continuous forest inventory of zhejiang province

浙江省森林资源连续清查系统抽样防偏试验初报

Two hundred subjects were selected by systematic sampling from non-English-major sophomores in Southwest Jiaotong University.

调查对象是西南交通大学二年级非英语专业的学生，经系统抽样，选取男女学生各100名完成问卷。

Methods The multi-stage sampling method, i.e. cluster and stratification sampling combined with systematic sampling, was applied to conduct a household survey of residents in communities. The data of survey were recorded with database of Epi data, and analyzed statistically with analysis software of SAS.

方法采取多阶段抽样方法，即整群分层抽样和机械抽样相结合的方法对社区居民进行入户调查，调查数据采用EPI DATA数据库录入，SAS分析软件进行统计分析。

the control group consisted of a systematic sampling of newborns delivered over the same period that were not readmitted (n=74).

另外我们取同时期出生但并未再入院之新生儿为对照组，共74位。

the current nutrient status of crops can now be determined through the systematic sampling of plants as appropriate times.

作物当时的营养状况，可在适当时期对植物的系统采样进行营养分析。

this paper carried out a systematic sampling and analysis on water quality of jinan spring system.

对济南泉域岩溶地下水系统水质进行了系统的采样分析。

about the quality of systematic sampling error estimator

系统样本差估计量的优良性

High variance reduction and processing time saving due to systematic descriptive sampling could be expected.

用系统描述性抽样代替蒙特卡罗的随即抽样过程，从而使得计算效率与降低方差都得到了明显地改善。

systematic simulation of lca process mixed traffic noise forecast with sampling simulation system

LCA系统模拟利用模拟采样系统进行混合车流的噪声预报

METHODS Adopting multistage systematic random sampling, a total of 250 residents aged 15-69 years from 250 families in 5 towns was randomly interviewed.

方法采用多阶段系统随机抽样方法，抽取萧山区5个镇250户15～69岁的常住居民进行入户调查。

In the present study, three pairs of synonyms are selected carefully by the systematic random sampling from 900 lexical practices for TEM-4 ( East China University of Science and Technology Press).

通过等距抽样和实验前测，作者从《英语专业四级词汇选择900题》（华东理工大学出版社）确定出三组同义词作为实验目标词。