... 两阶段项目 two-phased project 两阶段样品 two-stage sample 分两阶段实施 be implemented in two phases ...
基于1个网页-相关网页
two stage sample 二段样本
·2,447,543篇论文数据，部分数据来源于NoteExpress
The present balanced two-layer sample rotation system is applicable only to the monthly survey with two-stage sample designs and with small primary sampling units.
目前的平衡两层次样本轮换模式只适用于一级单元规模较小时的两阶段抽样月度调查。
youdao
应用推荐
模块上移
模块下移
不移动