查询词典 systematic sampling

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。

15 hospitals and 2 937 residents were selected and studied through random and systematic sampling methods in Hainan Province.

采用分层抽样和随机抽样方法对15家医疗机构和2 937名疟区居民进行流行病学调查。

Based on systematic sampling and investigation of agricultural soil, the geochemistry characters of agriculture soil of Xi'an city were studied.

通过取样调查和实验分析，研究了西安市郊农田土壤环境的地球化学特征。

The outpatients expenses in a teaching hospital in Shiyan were investigated by means of systematic sampling.

本文采用系统抽样的方法，调查了某医院门诊病人费用情况及有关因素。

Methods 3944 persons were selected by systematic sampling in 3 districts.

采取分层随机整群抽样的方法，于2006年10月和2007年9月进行2次调查，以示范路上沧浪区、金阊区、高新区的33个单位、10个社区居民，共计3 944人作为调查对象。2007年9月，以非示范路上某区采取同样方法抽取居民809人进行问卷调查。

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。

The Two-Stage Systematic Sampling simulation strategy is proposed to sovle the instruction selection problem.

针对上述问题，二阶段系统抽样模拟将详细模拟指令的选择分为两个阶段。

Here, we present a systematic sampling and genetic screening of an East Asian–specific Y-chromosome haplogroup (O3-M122) in 2,332 individuals from diverse East Asian populations.

采用父系遗传的 Y 染色体的遗传标记，我们对 40 个东亚南北方代表群体，共 2332 个男性个体进行了系统的比较分析。

Surveying 1034 enrollees in 4 sampled counties through systematic sampling.

利用系统抽样方法在4地对1034名参合农民进行问卷调查。

METHODS It was compared for quality of the hospitalized medical history by using systematic sampling method and collected 300-patient medical history separately before （from January to June,2005） and after （from January to June,2008） Hospital Management Year activities.

采用系统抽样的方法，分别抽取医院管理年活动前（2005年1～6月）和医院管理年活动后（2008年1～6月）住院病历各300份，对住院病历的质量进行比较。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。