... random sequence随机序列 random copolymer[机]无规共聚物 stratified random sampling分层随机抽样 ...
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stratified random sampling method [统计] 分层随机抽样法
proportionate stratified random sampling 定比分层抽样法
disproportionate stratified random sampling 异比分层随机抽样
multistage stratified random sampling [统计] 多级分层随机抽样
stratified random sampling surveys 分层随机抽样调查
Using Stratified Random Sampling 采用分层随机抽样
stratified random sampling pattern 分层随机抽样格式
adopting stratified random sampling method 采用分层随机抽样方法
stratified random sampling for percentages 求百分比的分层随机抽样
We randomly selected 806 children under 6 years of age from 45 primary anganwadi (childcare) centres in Chandigarh, Punjab, India, that were chosen through multistage stratified random sampling.
在印度旁遮普省昌迪加尔的45所托儿所(anganwadi)中心采用多级分层随机取样法选择了806名6岁以下儿童。
Method Using stratified random sampling method.
方法采用分层随机抽样方法。
Methods: Totally 1000 nurses were investigated with a self designed questionnaire using stratified random sampling.
方法：采用分层随机抽样的方法，自行设计问卷，对1000名临床护理人员进行调查。
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