... random sequence随机序列 random copolymer[机]无规共聚物 stratified random sampling分层随机抽样 ...
基于3个网页-相关网页
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
proportional stratified random sampling 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 model 分层随机抽样
stratified random sampling pattern 分层随机抽样格式
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。
Multistage stratified random sampling was conducted an interview survey in status of illness for children under 2 years old.
采用多阶段分层随机抽样法对2岁以下儿童进行疾病状况询问调查。
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