... multistage cluster sample 多段聚类样本 多段?聚样本 multistage sampling 多段取样法 multistage theories 多阶段理论 ...
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stratified multistage sampling 分层多级抽样
aerial photo multistage sampling 航空像片多阶抽样法
two-stage and multistage sampling 两阶和多阶抽样
multistage stratified random sampling [统计] 多级分层随机抽样
multistage data sampling 多阶段数据取样
multistage mixed sampling 多级混合抽样
stratified multistage cluster sampling 分层多级整群抽样
multistage and random sampling 多阶段随机抽样
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The coefficient optimization for the multistage sampling rate conversion is also presented.
还给出了多级实现的系数优化算法。
Methods A total of 550 students in 4 junior schools were sampled with multistage sampling and surveyed.
方法通过多级随机抽样抽取济南市4所初中550名初一学生，采用问卷调查。
In large scale field surveys, multistage sampling is applied because the situations are complex and there are many influencing factors.
大规模现场调查，由于情况复杂、影响因素多，往往采用多阶段混合型随机抽样方法。
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