查询词典 stratified sampling

stratified proportional sampling：分层比例抽样

stratified plastics 层压塑料 | stratified proportional sampling 分层比例抽样 | stratified random sampling method 分层随机抽样法

stratified sample：分层样本

Stratified random sampling 分层随机抽样 | Stratified sample 分层样本 | Stratified sampling 分层抽样

Stratified random sample：分层随机样本

Stratified purposive sampling 分层立意样本 | Stratified random sample 分层随机样本 | Stratified random sampling 分层随机抽样

stratified purposive sample：分层立意样本

分层一段抽样 stratified one stage sampling | 分层立意样本 stratified purposive sample | 分层立意抽样 stratified purposive sampling

stratified cluster sampling：分层集合体抽样,分层整群抽样

stratified clot 层状血块 | stratified cluster sampling 分层集合体抽样,分层整群抽样 | stratified coal seam sample 分层煤样

Stratified random sampling：分层逢机取样

迭生筛管部 stratified phloem | 分层逢机取样 stratified random sampling | 分层次生细胞壁 stratified secondary wall

stratified coal seam sample：分层煤样

stratified cluster sampling 分层集合体抽样,分层整群抽样 | stratified coal seam sample 分层煤样 | stratified cone 层状锥

stratified mass selection：分层群选

stratified epithelium 复层上皮 | stratified mass selection 分层群选 | stratified sampling 分层抽样

stratified pavement epithelium：复层扁平上皮

stratified one-stage cluster sampling ==> 分层单级整群抽样 | stratified pavement epithelium ==> 复层扁平上皮 | stratified plastics ==> 层压塑料

probability sampling：概率取样

概率取样(probability sampling)n 这种方法系指从一个研究母体中科学地筛选出一部分样本,将这部分样本视为整个研究母体的缩影. 概率取样可以分为三种形式:随机取样(random sampling)、分层取样(stratified sampling)和主观取样(judgement sampling).

Formosa Coral Snake：带纹赤蛇

羽鸟氏带纹赤蛇 Hemibungarus sauteri hatori | 带纹赤蛇 Hemibungarus sauteri sauteri | 带纹赤蛇 Hemibungarus sauteri; Formosa Coral Snake; Striped Coral Snake; Taiwan Coral Snake

Slough：斯劳

大学有3个校区:伊令(Ealing)、斯劳(Slough)和里丁(Reading). 这三个位于伦敦西部的校区距离伦敦市中心都很近,从伦敦希思罗机场(London Heathrow Airport)到大学的主校区-伊令(Ealing)乘地铁仅需15分钟.